Practice Test

Q1) A parachutist jumps from a height of 5000 metre. The relationship between his falling speed, v and the distance fallen though d is best represented as: Show Answer

Q2) Light year is Show Answer

Q3) Two bodies of different masses say 1 kg and 5 kg are dropped simultaneously from a tower . They will reach the ground Show Answer

Q4) The numerical ratio of displacement to distance for a moving object is Show Answer

Q5) Choose the correct statements from the following Show Answer

Q6) A passenger in a moving train tosses a coin, If the coin falls behind him, the train must be moving with Show Answer

Q7) A man is walking from east to west on a level rough surface. The frictional force on the man is directed Show Answer

Q8) When a body is stationery, then Show Answer

Q9) Conservation of liner momentum is equivalent to Show Answer

Q10) An object will continue moving uniformly when Show Answer

Q11) When the force retards the motions of body, the work done is Show Answer

Q12) A bullet is fired from a rifle. If rifle recoils freely, then K.E of the rifle is Show Answer

Q13) Gravity is the force of attraction between Show Answer

Q14) An artificial satellite orbiting the earth does not fall down because the earth's attraction Show Answer

Q15) The gravitational force with which the earth attracts the moon Show Answer

Q16) Newton's law of gravitation applies to Show Answer

Q17) The ratio of the radii of Mars to that of Earth around Sun is 1.524. The approximate time taken by Mars to complete one revolution around Sun is Show Answer

Q18) A ball is dropped from a satellite revolving around the earth at a height of 120 km. The ball will Show Answer

Q19) Kerosene oil rises up in a wick of a lantern because of Show Answer

Q20) In a stem line (laminar flow) the velocity of flow at any point in the liquid Show Answer

Q21) Two pieces of metal when immersed in a liquid have equal upthrust on them; then Show Answer

Q22) A man is sitting in a boat which is floating is pond. If the man drinks some water from the pond, the level of water in the pond will Show Answer

Q23) The number of significant figures in 0.00060 m is Show Answer

Q24) The circular motion of a particle with constant speed is Show Answer

Q25) In uniform circular motion, the velocity vector and acceleration vector are Show Answer

Q26) If an object is in a state of equilibrium Show Answer

Q27) A man getting down a running bus, falls forward because Show Answer

Q28) A parrot is sitting on the floor of a closed glass cage which is in a boy's hand.
If the parrot starts flying with a constant speed, the boy will feel the weight of the age as Show Answer

Q29) Kilowatt hour is the unit of Show Answer

Q30) Analogue of mass in rotational motion is Show Answer

Q31) The value of g is maximum Show Answer

Q32) The time period of an earth satellite in circular orbit is independent of Show Answer

Q33) The value of the universal gravitational constant Show Answer

Q34) Two wires of same material and length but cross-sections in the ratio 1: 2 are used to suspend the same loads. The extensions in them will be in the ratio Show Answer

Q35) According to Hooke's law of elasticity, if stress is increased then the ratio of stress to strain: Show Answer

Q36) Small droplets of a liquid are usually more spherical in shape than larger drops of the same liquid because Show Answer

Q37) The lift of an air plane is based on Show Answer

Q38) Which one of the following is the correct sequence of the given substances in the decreasing order of their densities? Show Answer

Q39) Three identical vessels A,B and C are filled with water, mercury and kerosene respective up to an equal height. The three vessels are provided with identical taps at the bottom of the vessels. If the three taps are opened simultaneously then which vessel is emptied first? Show Answer

Q40) For which one of the following is capillarity not the reason? Show Answer

Q41) What happens when a heavy object and a light object are allowed to fall from the certain height in the absence of air Show Answer

Q42) The working principle of a washing machine is : Show Answer

Q43) No work is done when Show Answer

Q44) S.I unit is pressure is Show Answer

Q45) Who among the following anticipated Newton by declaring that all thing gravitate to the earth? Show Answer

Q46) The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied ? Show Answer

Q47) Consider the following two statements:
1) Liner momentum of a system of particles is zero.
2) Kinetic energy of a system of particles is zero.
Then Show Answer

Q48) Consider the following statements:
1) Particle of different masses falls with different acceleration on earth.
2) Particle is at rest, it force is zero.
3) Particle moves in the direction of force.
4) If particle is initially at rest then it moves in direction of net force.
Which of these statements is/are correct? Show Answer

Q49) Consider the following statements:
1) A body can have constant velocity and still have varying speed.
2) A body falls freely from a height with uniform acceleration .
Which of these statements is/are correct? Show Answer

Q50) Consider the following statements:
1) The objects appear to be more heavy when submerged in water than they are in air.
2) A needle place carefully on the surface of water may float, whereas a ball of the same material will always sink.
Which of these statements is/are correct? Show Answer

Q51) Consider the following statements:
1) A dam for storing water is made thinner at the bottom then at the top.
2) The ratio of buoyant forces experienced by a solid body when immersed in two liquids whose relative densities are 1 and 0.5 respectively 2:1.
3) The buoyancy of an object depends both on the material and shape of the object.
Which of these statements is/are correct? Show Answer

Q52) Consider the following statements:
1) Weightlessness experienced while orbiting the earth in a spaceship is the result of zero gravity.
2) All freely falling result bodies are weightless.
Which of these statements is/are correct? Show Answer

Q53) Consider the following statements:
1) Copernicus discovered that the earth moves around the sun.
2) An astronaut cannot use a straw to sip a drink on the surface of the moon.
3) The S.I unit of weight is kilogram.
Which of these statements is/are correct? Show Answer

Q54) Consider the following statements
1) A person standing for a long time with a suitcase on his head does no work in terms of physics.
2) There cannot be any displacement of an object in the absence of any force acting on it.
3) The law of conservation of energy is valid in all situations and for all kinds of transformations.
Which of these statements is/are correct? Show Answer

Q55) Consider the following statements
1) Work is always done on a body when it experiences an increase in energy through a mechanical influence.
2) Work done by the resultant force is always equal to change in kinetic energy.
Which of these statements is/are correct? Show Answer

Q56) Regarding mechanical energy, which of the following statement is/are correct?
1) Kinetic energy of a body depends upon the direction of motion.
2) When a body falls freely,its P.E is converted into K.E.
3) A body at rest may possess P. E. Show Answer

Q57) Consider the following statements:
1) Action and reaction act on the same body.
2) Volume is a measure of the inertia of a body.
Which of these statements is/are correct? Show Answer

Q58) Consider the following statements:
1) The wings of a bird push air upwards and the air must be pushing the bird downwards.
2) For every action there is an equal and opposite reaction which of these statements is/are correct? Show Answer

Q59) Consider the following statements:
1) Motion of moon around earth is a non-uniform motions.
2) The size of moon is smaller than that of earth.
Which of these statements is/are correct? Show Answer

Q60) Consider the following statements:
1) The ratio of stress and strain remains constant.
2) The shear modulus of liquid is infinite .
3) Bulk modulus of a perfectly rigid body is infinity.
Which of the statements given above is/are correct?
Show Answer

Q61) Consider the following statements:
1. When the upthrust is greater than the weight, the body floats inside the liquid
2. Gravitational force between two charges can be attractive or repulsive.
Which of these statements is/are correct? Show Answer

Q62) A body weight less at the equator than at the pole because:
1) earth rotates about its axis.
2) the ice cap at the poles increases gravitational pull.
3) equatorial diameter is greater than the polar diameter.
4) of some unknown facts.
Which of the statements given above is/are correct? Show Answer

Q63) Consider the following statements:
1) The gravitational force exerted by the sun on the moon is greater than the gravitational force exerted by the earth on the moon.
2) A heavy body falls at a faster rate than a light body in vacuum.
Which of these statements is/are correct? Show Answer

Q64) If a body projected with less than escape velocity the body
1) can reach a certain height and may fall down following a straight line path.
2) can reach a certain height and may fall down following a parabolic path.
3) may orbit the earth in a circular orbit.
4) may orbit the earth in an elliptical orbit.
Which of the statements given above is/are correct? Show Answer

Q65) The value of g will be
1) minimum at the equator.
2) lesser at the top of Mount Everest than the earth's surface.
3) maximum at the poles of the earth.
4) zero at the center of the earth.
Select the correct answer using the codes given below: Show Answer

Q66) Consider the following statements regarding translatory motion.
1) A car moving on a straight road.
2) A planet moving around sun in an elliptical orbit.
3) A shell fried from a cannon.
The correct choice is Show Answer

Q67) Consider the following statements regarding a particle moving along a straight line with constant velocity .
1) The average is equal to the instantaneous velocity.
2) The average velocity is equal to the average speed.
3) The displacement is equal to the distance.
The correct choice is
Show Answer

Q68) Consider the following statements :
If there were no phenomenon of capillarity
1) It would be difficult to use a kerosene lamp.
2) one would not be able to use a straw to consume a soft drink.
3) the blotting paper would fail to function.
4) the big trees that we see around would not have grown on the Earth.
Which of the statements given above is/are correct? Show Answer

Q69) Consider the following statements:
A 4-Wheel vehicle moving in a sharp circular path at high speed will :
1) overturn about its outer wheels
2) overturn about is inner wheels
3) skid outwards
4) skid inwards
Which of theses statements are correct?
Show Answer

Q70) Consider the following statements :
A simple pendulum is set into oscillation
Then:
1) the acceleration is zero when the bob passes through the means position.
2) in each cycle the bob attains a given velocity twice.
3) both acceleration and velocity of the bob are zero when it reaches it extreme position during the oscillation.
4) the amplitude of oscillation of the simple pendulum decreases with time.
Which of these statements are correct?
Show Answer

Q71) Consider the following features of newer models of motor cars:
1) Radial tyres
2) Stremlined body
3) Multipoint fuel injection
4) Catalytic converter with exhaust
Which of these make the new models of motor cars more fuel efficient? Show Answer

Q72) Assertion: Light year and year, both measure time.
Reason: Light year is the distance which light covers in one year.
Show Answer

Q73) Assertion: A body is momentarily at rest when it reverses the direction.
Reason: A body cannot have acceleration if its velocity is zero at a given instant of time.
Show Answer

Q74) Assertion: In a free fall, weight of a body becomes effectively zero.
Reason: Acceleration due to gravity acting on a body having free fall is zero.
Show Answer

Q75) Assertion: If earth suddenly stops rotating about its axis, then the value of acceleration due to gravity will become same at all the places.
Reason: The value of acceleration due to gravity depends upon the rotation of the earth,
Show Answer

Q76) Assertion: Two satellites A and B are in the same orbit around the earth, B being behind A. B cannot overtake A by increasing its speed.
Reason: It will then go into a different orbit.
Show Answer

Q77) Assertion: A balloon filled with hydrogen stops rising after it has attained a certain height in the sky
Reason: As height increases, density of air decreases resulting in increased buoyant force.
Show Answer

Q78) Assertion: To float, a body must displays liquid whose weight is equal to the actual weight.
Reason: The body will experience no net downward force in that case.
Show Answer

Q79) Assertion: A quick collision between two bodies is more violent than a slow collision, even when the initial and the final velocities are identical.
Reason: Because the rate of change of momentum which determines the force is greater in the first case.
Show Answer

Q80) Assertion: The work done during a round trip is always zero.
Reason: Displacement of body in round trip is zero.
Show Answer

Q81) Assertion: Centre of mass of a three particle system which are not collinear, may lies on line joining any tow particles.
Reason: Centre of mass of a three particle system lies within the triangle with the particles at its vertices .
Show Answer

Q82) Assertion: Steel is more elastic than rubber.
Reason: For same load, less strain is produced in strain.
Show Answer

Q83) Assertion: The weight of a body decreases with the increases of altitude on earth.
Reason: The earth is not a perfect sphere.
Show Answer

Q84) Assertion: With the increases of temperature, the viscosity of glycerin increase
Reason: Rise of temperature increases kinetic energy of molecules.
Show Answer

Q85) Assertion: An iron ball float on mercury but gets immersed in water.
Reason: The specific gravity of iron is more than that of mercury.
Show Answer

Q86) Assertion: A man standing on a completely frictionless surface can propel himself by whistling.
Reason: If no external force acts on a system, its momentum cannot change.
Show Answer

Q87) The variation of displacement d with time t in the case of a particle falling freely under gravity from rest is correctly show in graph: Show Answer

Q88) Which of the following distance-tine graph (x-t) represents one-dimensional uniform motion? Show Answer

Q89) A Liquid is flowing in a streamlined manner through a cylindrical pipe. Along a selection containing the axis of Show Answer

Q90) One astronomical unit is the average distance between Show Answer

Q91) The SI unit of two quantities are same. Which of following option is true ? Show Answer

Q92) Assertion (A) SI unit are world wide acceptable. Reason (R) They shows invariability, availability and reproducibility.
Which one of the following is correct ? Show Answer

Q93) The dimensional formula of work is Show Answer

Q94) Assertion (A) If we add a zero vector to the another vector, its value remain unchanged.
Reason (R) The zero vectors having the magnitude zero.
Which one is correct ? Show Answer

Q95) Assertion (A) The subtraction of two vectors are a special condition of addition.
Reason (R) The inverted vector is added to the another vector. Which one of following is correct ? Show Answer

Q96) Two equal magnitudes vectors are in the opposite direction to each other. The resultant of these two vectors will be Show Answer

Q97) Which one of the following is a vector quantity ? Show Answer

Q98) A car is running on a road at a uniform speed of 60 km/h. The net resultant force on the car is Show Answer

Q99) A person standing at the middle point of a wooden ladder which starts slipping between a vertical wail and the floor of a room, while continuing to remain in a vertical plane. The path traced by a person standing at the middle point of the slipping ladder is Show Answer

Q100) For a constant speed of projection the horizontal distance covered by a projectile will be maximum, if Show Answer

Q101) The speed and the velocity differ from each other due Show Answer

Q102) The distance travelled by a body is directly proportional to the square of time taken. Its acceleration Show Answer

Q103) Assertion (A) Force are vector which can produce some change in energy.
Reason (R) Change in energy refers to a work.
Which one of the following is correct ? Show Answer

Q104) The strongest force in the nature is Show Answer

Q105) Assertion (A) The magnitude of centrifugal and centripetal force is same.
Reason (R) Both acts in same direction. Show Answer

Q106) The total acceleration of a circulating particle showing non-uniform circular motion Show Answer

Q107) A car is moving with some acceleration on the rough road. Its total mechanical energy Show Answer

Q108) Work done by a force depends upon the Show Answer

Q109) Consider the following statements. Work is not done when
1) a man is walking on a horizontal road
2) a man is climbing up a hill
3) a man with a load on his head is walking on horizontal road
4) moon is revolving around the earth
Which of the statement(s) given above are correct ? Show Answer

Q110) The mass of the body is halved and its speed is doubled. What happens to kinetic enegy of the body ? Show Answer

Q111) A simple machine helps a person in doing Show Answer

Q112) Two pieces of glass plate one upon the other with a little water in between them cannot be separated esily bacause of Show Answer

Q113) Assertion (A) Rubber is more elastic than steel.
Reason (R) There is a large deformation instead of a small force ? Show Answer

Q114) Which one of the following statements is correct ? Show Answer

Q115) An experimenter plots a graph from his readings on the determination of Young's modulus of metal wire. The quantities X and Y-axes may be respectively Show Answer

Q116) Consider the following statements
1) If a person look at a coin which is in a bucket of water, the coin will appear to be closer than it really is.
2) If a person under water looks at a coin above the water surface, the coin will appear to be at a higher level than it really is.
Which of the above statements is/are correct ? Show Answer

Q117) Two cylindrical jar having two different radii R1 and R2 (R1 > R2) are filled with same liquid and up to same height, Then . Show Answer

Q118) Which one of the following is not related to the Bernoulli's equation ? Show Answer

Q119) Which of the following has the highest density ? Show Answer

Q120) According to which theory, the roof made by the tin, flies in cyclones ? Show Answer

Q121) If two conducting spheres are separately charged and then brought in contact Show Answer

Q122) Two capillary tubes of different diameters are dipped in water. The rise of water is Show Answer

Q123) It is easier to swim in a sea water than in ordinary water because Show Answer

Q124) For a body float in a liquid with some portion outside, the weight of the liquid displaced by the fully immersed body Show Answer

Q125) Consider the following statements
1) Surface tension of liquid depends on length but not on the area. Like the elastic property
2) SI unit of surface tension is N/m.
3) Surface tension is a scalar quantity because it has no specific direction for a given liquid.
Which of statement(s) given above is/are correct ? Show Answer

Q126) Assertion (A) The viscosity increases with the temperature.
Reason (R) The increase in temperature increases the internal energy of the molecules. Show Answer

Q127) Ball bearing are used in bicycles, cars, etc, because Show Answer

Q128) A girl is swinging on a swing in sitting position. When the girl stands up, the period of swing will
Show Answer

Q129) Which one of the following distance time graph represents a uniformly accelerated motion of the particle ? Show Answer

Q130) Which of the following graph between d and t, correctly represents a freely falling body under the gravity from rest ? Show Answer

Q131) Assertion (A) Distance travelled by a particle cannot be zero while its displacement may be zero.
Reason (R) Distance is length of path and displacement is change in position after travelling
Which one of the following option is correct ?
Show Answer

Q132) When the frequency distribution is normal Show Answer

Q133) An ant is running in a plane such that its distance (perpendicular) from X-axis and that of from Y-axis is changed, then consider the following statements
1) Its velocity have two component one is along X-axis while other is along Y-axis
2) Its velocity does not have its component at all.
3) Its acceleration having two component one is along X-axis and other is along Y-axis.
4) It cannot be said
Which of the given statements is correct ? Show Answer

Q134) Consider the following statements
1) Speed-time graph for an uniformly accelerated motion may be curved or straight line.
2) The variation of a point in a xy-plane is due to its effective motion along both the axes.
3) Retardation is also a types of acceleration with directed opposite to velocity.
4) if a body was in motion then its displacement cannot be zero.
Which of the given statement(s) is/are correct ?
Show Answer

Q135) Which one of the following is true ? A vector is not changed if Show Answer

Q136) Which of the set given below may represent the magnitudes of three vectors adding to zero ? Show Answer

Q137) Consider the following statements
1) The component of vector is always less than its mangnitude.
2) The component of vector is always greater than its magnitude.
3) A vector can have its various components in a plane.
4) All the physical quantities can be classified as a vector or a scalar
Which one of the following option is true ? Show Answer

Q138) A + B = A - B. then magnitude of B must be Show Answer

Q139) Consider the following statements
1) Speed of a bus due south is a vector.
2) Torque exerted by a drilling machine on the floor is a vector.
3) Energy conserved in a body at a height from the ground is a vector.
4) Momentum of a body is a vector.
Which of the above statement(s) is/are correct ? Show Answer

Q140) Assertion (A) Forces is defined on the product of force and displacement caused by force.
Which one of the following is correct ? Show Answer

Q141) Consider the following statements
1) Gravitational forces are always pulling force.
2) Nuclear forces are always a pulling force.
3) Weak forces are encountered when reaction involving nuclear particles takes places.
4) Magnetic forces are always pulling forces.
Which of given force is/are correct statements ? Show Answer

Q142) If the earth stops rotating then the apparent value of gravitational acceleration on its surface will Show Answer

Q143) Assertion (A) A heavy mass has greater its Intertia.
Reason (R) Intertia is unwillingness of body to change its state.
Which of the following is correct ? Show Answer

Q144) Assertion (A) A bob connected to the string can be whirled in a circle.
Reason (R) The tension in the string gives of the centripetal force is always same at everypoint.
Which of the following is correct ? Show Answer

Q145) Consider the following statements
1) The linear momentum of a particle in independent of the frame relative to which it is observed
2) The kinetic energy of a body is independent of the frame relative to which it is observed.
Which of the option is true ? Show Answer

Q146) Consider the statements
1) Linear momentum of the system remain constant.
2) In a collision kinetic energy of the system of the bodies remains constant.
Which of the options is true ? Show Answer

Q147) Assertion (A) In a circus, a motor cyclist moves safely on a vertical circle.
Reason (R) Its speed at the top most on the circular track is maintained to give them the required centripetal force.
Which one is a correct option ? Show Answer

Q148) In rocket propulsion, which of the following principle is followed ? Show Answer

Q149) Consider the following statements
1) Rolling friction is very small in comparison.
2) Origin of the friction of relative motion of the two surfaces.
3) Limiting friction is maximum value of static friction.
4) Friction between the two surface depends upon the microscopic area.
Which one of the following is true ? Show Answer

Q150) Consider the correct statements
1) Coefficient of static friction is always greater than the coefficient of kinetic friction
2) Limiting friction is always greater than the kinetic friction.
3) Limiting is never less than static friction
4) Static friction is always greater than the kinetic friction
Which one of the following is true ? Show Answer

Q151) Which one of the following reflects back more sunlight as compared to other three ? Show Answer

Q152) A vehicle going on a horizontal road towards east neglect any force by the air. The frictional forces on the vehicles by the road.
1) is towards east if the vehicles is accelerating.
2) is zero, if the vehicle is moving with a uniform velocity.
3) must be towards east.
4) must be towards west.
Which of the statement(s) is/are true ? Show Answer

Q153) A heavy ball is thrown from a cliff of a height h with a speed v. The ball will hit the earth with maximum speed if it is thrown Show Answer

Q154) Assertion (A) A powerful machine can do a work faster, than the low powered one.
Reason (R) Power is the rate of work.
Which one of following is correct ? Show Answer

Q155) Consider the following statements
1) Spring forces are conservative forces.
2) Frictions are conservative forces.
3) For a body to have potential energy its height from the earth's surface is most.
4) All type of energy have the same SI unit.
Which one of the option is correct ? Show Answer

Q156) Assertion (A) Total mechanical energy of a body will be conserved.
Reason (R) Internal forces do not work.
Which one of the following is correct ? Show Answer

Q157) An astronaut having its mass 10 kg will shown it at the moon Show Answer

Q158) Assertion (A) small force can affect on same as large force.
Reason (R) The moment of a force is the product of force and its perpendicular distance from the axis of rotation.
Which one of the following options is correct ? Show Answer

Q159) Which of the following statements are correct when a gymnast sitting on a rotating stool with his arms outstrctched, suddenly lowers his hands ?
1) The angular velocity decreases.
2) The angular velocity increases
3) The moment of inertia decreases
4) The moment of inertia increases
Select the answer using the codes given below Show Answer

Q160) Assertion (A) machines may be mechanical or electrical
Reason (R) Machines can be differentiated by its constructions and principles.
Which one of the following options is correct ? Show Answer

Q161) Consider the following statements
1) A body having constant linear velocity may have some angular speed with respect to a point
2) A force passing through the centre of rotation can produce moment to a body.
3) Torque has the SI unit N-m.
4) Centre of gravity is point where entire mass of the body is assumed to be concentrated.
Which one of the following options is correct ? Show Answer

Q162) Assertion (A) A body can remain in stable equilibrium for a long time.
Reason (R) It is low energy state of a body.
Which one of the following option is correct ? Show Answer

Q163) In a dry cell (battery), which of the following are used as electrolytes ? Show Answer

Q164) If there is no external force acting on non-rigid body.
1) Angular momentum
2) Linear momentum
3) Kinetic energy
4) Moment of inertia
Which of the following quantities must remain constant Show Answer

Q165) Assertion (A) The rain drops gets its terminal velocity.
Reason (R) It cannot harm our head on hitting.
Which of the following is correct ? Show Answer

Q166) Which of the following graph may represent the relation between the capillary rise h and the radius r of the capillary ? Show Answer

Q167) A piece of wood is taken deep inside a long column of water and released then consider the following statements. It will move up.
1) with a constant upward acceleration.
2) with a decreasing upward acceleration
3) with a deceleration
4) with uniform velocity (Speed).
Which of the following options is true ? Show Answer

Q168) A rain drop falls near the surface of earth with almost uniform velocity because Show Answer

Q169) Assertion (A) Water flowing through pipe of variable X-section can be at different speed at different sections.
Reason (R) Equation of continuity is product of area and speed of the fluid.
Which one of the following is true ? Show Answer

Q170) Assertion (A) An iron pin get immersed in water a ship floats.
Reason (R) Density of iron in greater than the density of water while the density of ship material is less than that of water.
Which of the following option(s) is correct ? Show Answer

Q171) Consider the following statements
1) Hydraulic lift works on pascal's law.
2) Height of liquid in capillary follows the Bernoulli's principle.
3) Surface tension is a molecular property of the materials.
4) Between the same surface, there is an adhesive force.
Which of the option is correct ? Show Answer

Q172) A spherical ball is droped in a long coloum of a viscous liquid. The spend of the ball as a function o time may be best represented by the graph. Show Answer

Q173) A spinning wheel is brought in contact with an identical wheel at identical speed. The wheels shows down under the actions of friction. Consider the following
1) Kinetic energy of first wheel decreases.
2) Total energy of the first wheel decreases.
3) Mechanical energy of first wheel decreases.
4) Internal energy of first wheel decreases.
Which one of the options is correct ? Show Answer

Q174) In a photo electric arrangement if the potential difference is increased. Then,
1) the kinetic energy of the photo electron will be increased.
2) the work function for the material will be increased.
3) the current in the wire is increased
Which of the following statement(s) is/are true ? Show Answer

Q175) Assertion (A) Photo electric effect phenomenon is a particle nature of electron as well as light.
Reason (R) Both behaves as the particles.
Which of the following is correct ? Show Answer

Q176) Consider the following statements
1) In a photo electric effect phenomenon single photon interacts with a single electron in the surface of the metal .
2) The collision assumed to be elastic.
3) Rest mass of photon is zero.
4) Speed of photon is equal to the speed of light
Which of the statement(s) is/are true ? Show Answer

Q177) Particle showing dual nature is/are Show Answer

Q178) Consider the following statements
1) All units may be represented in terms of base units.
2) A base unit cannot be represented in terms of other base unit.
3) There are some physical quantities which are unitless.
4) Work and energy has the same unit.
Which of the following statement(s) is/are true ? Show Answer

Q179) Assertion (A) There are some derived physical quantities.
Reason (R) It is derived from the base quantities.
Which of the following is true ? Show Answer

Q180) The SI unit used for the heat is Show Answer

Q181) Assertion (A) The SI unit of time is second.
Reason (R) One second is 1/86400th part of mean solar day.
Which of the following is true ? Show Answer

Q182) An ideal unit should possess Show Answer

Q183) Assertion (A) Pressure and stress has its same unit.
Reason (R) Pressure and stress are same.
Which of the following is true ? Show Answer

Q184) Consider the following statements
1) Angle is suplementary physical quantity.
2) Work and energy are convertible into one another.
3) Pressure is the force on an unit area.
4) Thermodynamic heat is a base quantity.
Which of the following option(s) is true ? Show Answer

Q185) Consider the following statements
1) The magnitude of vector is always a scalar.
2) The total path length is always equal to the magnitude of the displacement vector of a particle.
3) The average speed of a particle is either greater or equal to the magnitude of the average velocity of the particle over the same interval of time.
4) Three vectors not lying in a plane can never add up to give a null vector.
Which of the statement(s) given above is/are correct ? Show Answer

Q186) Consider the following statements
1) All plane angles are measured in radian.
2) All the solid angles are measured in steradian.
3) Solid angle is measured in steradian.
Which of the statement(s) given above is/are correct ? Show Answer

Q187) Which of the following statements is false ? Show Answer

Q188) Consider the following statements
1) Centrifugal force is exerted by a cream separater machine of the milk.
2) A horse suddenly moves then it is a fear to fall down the horse rider because of inertia of rest.
3) The bodies executing free falling motion have equal momentum.
Which of the statement(s) given above is/are correct ? Show Answer

Q189) Assertion (A) The average velocity of the object over an interval of time is either smaller than or equal to the average speed of the object over the same interval.
Reason (R) Velocity is vector quantity and speed is a scalar quantity. Show Answer

Q190) A body moves with a constant speed along a curved path, its acceleration Show Answer

Q191) The Kinetic energy of a particle continuously increased with time Show Answer

Q192) A body is moving in a circular path with a constant speed. It has Show Answer

Q193) Assertion (A) Aeroplanes always fly at low altitudes.
Reason (R) According to Newton's third law of motions, for every action there is an equal and opposite reaction. Show Answer

Q194) Consider the following statements
1) Work done by a centripetal force is always zero.
2) When a body falls. potential energy is converted into kinetic energy.
3) The power of a body is defined as its capacity of doing work.
Which of the statement(s) given above is/are correct ? Show Answer

Q195) Consider the following statements
1) The work done by a body against friction always causes a loss in the kinetic energy.
2) In an inelastic collision of two bodies, the total energy of the system changes to some other form but the linear momentum and kinetic energy remain unchanged.
Which of the statement(s) given above Show Answer

Q196) Which of the following graph represents, a body is moving with in finite velocity ? Show Answer

Q197) A bullet hits and gets embedded in a solid block resting on a horizontal frictionless table. What is conserved ? Show Answer

Q198) When the velocity of a body is doubles, Show Answer

Q199) If a bomb dropped from an airplane explodes in mid-air Show Answer

Q200) Which of the following is correct when a person walks on a rough surface ? Show Answer

Q201) One light year is approximately equal to Show Answer

Q202) An athlete diving off high spring board can perform a variety of exercise in the air before entering the water body. Which one of the following parameter will remain constant during the fall ? Show Answer

Q203) A person is sitting in a car which is at rest. The reaction from the road at each of four weels of the car is R. When the car runs on a straight level road, how will the reaction at either of the front wheels vary ? Show Answer

Q204) The cat survive fall height much more than human or any other animal. It is because the cat Show Answer

Q205) A piece of paper and a cricket ball are dropped from the same height. Under which of the following conditions do both reach the surface simultaneously ? q Show Answer

Q206) For a particle revolving in a circular path with constant speed, the circular path with constant speed, the acceleration of the particle is Show Answer

Q207) Which one of the following graphs represents uniform motion ? Show Answer

Q208) Newton's first law is also called as Show Answer

Q209) Fat can be seperated from milk in a cream seperator because of Show Answer

Q210) A body starting from the rest moves along a straight line with constant acceleration. Which one of the following graphs represent the variation of speed (v) and distance (s) ? Show Answer

Q211) If a light body and a heavy body have equal momentum, then Show Answer

Q212) A metal ball and a rubber ball of the same mass are dropped from the same height. After hitting the floor, the rubber ball rises higher than the metal ball why ? Show Answer

Q213) Which of the following are the characteristic of an inelastic collision ?
1) Momentum is conserved
2) Total energy is conserved
3) Kinetic energy is conserved.
4) All the forces must be of conservative nature.
Choose the correct answer from the codes given below Show Answer

Q214) Which of the following is most elastic ? Show Answer

Q215) The function of ball bearing in a wheel is Show Answer

Q216) A solid cube just gets completely immersed in water when a 0.2 kg mass is placed on it. If the mass is removed, the cube is 2 cm above the water level. What is the length of each side of the cube ? Show Answer

Q217) Assertion (A) When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is always in forward direction.
Reason (R) The frictional force acts only when the bodies are in correct ? Show Answer

Q218) If the radius of the earth was shrink by one per cent, mass remaining the same, the value of g on the earth's surface would Show Answer

Q219) As we go from the equator to the poles, the value of g Show Answer

Q220) Assertion (A) The value of g is maximum at poles and minimum at equator.
Reason (R) Latitude at the poles is 90degree and the latitude at equator is 10 degree
Which one of the following is correct ? Show Answer

Q221) Assertion (A) Moon has no atmosphere.
Reason (R) This is because the moon does not have sufficient gravity to hold atmosphere on its surface
Which one of the following is correct ? Show Answer

Q222) When a particle executing in SHM passes through the mean position it has Show Answer

Q223) A simple pendulum is oscillating in a lift. If the lift moving upwards with a uniform acceleration, the period will Show Answer

Q224) Who among the following gave first the experimental value of G? Show Answer

Q225) Which of the following is not matched Show Answer

Q226) Ball bearings are used in bicycles, cars, etc, because Show Answer

Q227) Some pairs of devices and associated energy changes are given below:
(i) Electric generator – Mechanical to electrical
(ii) Electric motor – Electrical to mechanical
(iii) Diesel engine – Light to electrical
(iv) Solar cell – Chemical to mechanical
Which of the above pair/s is/are correctly matched? Show Answer

Q228) Consider the following features of newer models of motor cars :
1. Radial tyres
2. Streamlined body
3. Multipoint fuel injection
4. Catalytic converter with exhaust
Which of these features make the new models of motor cars more fuel efficient ? Show Answer