MDCAT Physics Chapter 3 online mcq test with answers for chapter 3 (Rotational and Circular Motion)

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MCAT Physics Chapter 3 Important MCQ's

Sr.#	Question	Answer
1	If the stone is thrown up vertically and return to ground, its potential energy is maximum	A. during the upward journey B. during the upward journey C. at the maximum height D. at the bottom
2	A stone is thrown up from the surface of earth when it reaches at maximum height. its total energy is equal to	A. mgh B. 1/2 𝑚𝑣² C. zero D. 2mgh
3	Initially, four identical uniform blocks, each of mass m and thickness h, are spread on a table How much work is done on the blocks in stacking them on top of one another?	A. 2 mgh B. 3 mgh C. 4mgh D. 6mgh
4	A 50 kg man with 20 kg load on his head climbs up 20 steps of 0.25 m height each. The work done in climbing is	A. 5 J B. 350 J C. 100 J D. 3430 J
5	3 joules of work is done in 3 seconds, then power is:	A. 6 watt B. 3 watt C. 18 watt D. 1 watt
6	A person holds a bucket of weight 60N. He walks 7 m along the horizontal path and then climbs up a vertical distance of 5 m. The work done by the man is:	A. 300 N-m B. 420 N-m C. 720 N-m D. none of these
7	The time taken by an engine of power 10 kW to lift a mass of 200 kg to a heightof 40 m is (g + 10ms2)	A. 2 sec B. 4 sec C. 8 sec D. 16sec
8	The momentum of a particle is numerically equal to its K.E. What is the velocity of a particle?	A. 9 ms^-1 B. 3 ms^-1 C. 2 ms-1 D. 1 ms^-1
9	A body of mass m kg is lifted by a man to a height of one meter in 30 sec. Another man lifts the same mass to the same height in 60 sec. The work done by them are in the ratio	A. 1: 2 B. 1: 1 C. 2: 1 D. 4: 1
10	Two bodies moving towards each other collide and move away in opposite directions. There is some rise in temperature of bodies because a part of the kinetic energy is converted into	A. heat energy B. electrical energy C. nuclear energy D. mechanical energy

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MDCAT Physics Chapter 3 MCQ Test With Answer for ( Work ,Energy & Power)

MCQ's Test For MDCAT Physics Chapter 3 Work ,Energy & Power Online Test

MDCAT Physics Chapter 3 Work ,Energy & Power Online Test

A person holds a bucket of weight 60N. He walks 7 m along the horizontal path and then climbs up a vertical distance of 5 m. The work done by the man is:

Work done in raising a box depends on:

The gravity does no work, when the body moves:

A bomb of mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg. The velocity of 18 kg mass is 6 ms1 The KE of other mass is

You lift a suit case from the floor and keep it on a table. The work done by you on the suitcase does not depend on

Which of the following work is greater?

An electric motor exerts a force of 40 N on a cable and pulls it by a distance of 30 m in one minute. The power supplied by the motor in watts is

A man weighing 500 N carries a load of 10 kg to the top of a building in 4 minutes. The work done by the man is 6 × 𝟏𝟎4 J. If he carries the same load in 8 minutes, the work done by the man will be:

If the stone is thrown up vertically and return to ground, its potential energy is maximum

A person weighing 20 mg walks on a level platform with a speed of 2 ms-1 . The work by the person against the force of gravity is:

The momentum of a particle is numerically equal to its K.E. What is the velocity of a particle?

Two bodies moving towards each other collide and move away in opposite directions. There is some rise in temperature of bodies because a part of the kinetic energy is converted into

The same retarding force is applied to stop a train. The train stops after 80 m. If the speed is doubled, then the Stopping distance will be:

3 joules of work is done in 3 seconds, then power is:

Kinetic energy of a body moving with speed of 10 ms-1 is 30 J. If its speed becomes30 ms-1 then its K.E becomes

If the momentum of a body is increased n times, its kinetic energy increases:

A motor boat is travelling with a speed of 3.0 m/sec. If the force on it due to water flow is 500 N, the power of the boat is

The power needed to lift amass of 5000g to height of 1min 2 second is

In an explosion a body breaks up into two pieces of unequal masses. In this:

A force 𝑭 = (𝟓𝒊̂+ 𝟑𝖩̂) newton is applied over a particle which displaces it from its origin to the point 𝒓 = (𝟐𝒊̂− 𝟏𝖩̂) meters. The work done on the particle is:

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MCAT Physics Chapter 3 Important MCQ's

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A bomb of mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg. The velocity of 18 kg mass is 6 ms¹ The KE of other mass is

A man weighing 500 N carries a load of 10 kg to the top of a building in 4 minutes. The work done by the man is 6 × 𝟏𝟎⁴ J. If he carries the same load in 8 minutes, the work done by the man will be: