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	. A force "F1" acts on a body through distance "S1" in the direction of motion and does work "W1". Similarly another force "F2" act on same body through distance "S2" but in opposite to the direction of motion and does work "W2". Now if F1 = F2 and S1 = S2 then which statement is correct.	A. W1 = W2 B. W2< W2 C. W1 > W2 D. W1 = W2= 0
2	A ball is thrown vertically upwards. Neglecting air resistance, which statement is correct?	A. The kinetic energy of the ball is greatest at the greatest height attained B. The potential energy of the ball increase uniformly with time during the ascent C. By the principle of conservation of momentum. The momentum of the ball is constant throughout its motion D. By the principle of conservation of energy, the total energy of the ball is constant throughout its motion
3	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
4	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. 324 J B. 256 J C. 245 J D. 524 J
5	A light and a heavy body have equal momenta. Which one has greater K.E?	A. The light body B. The heavy body C. The K.E are equa D. Data is incomplete
6	The body at rest may have:	A. Energy B. Momentum C. Speed D. Velocity
7	Car X is traveling at half the speed of car Y. Car X has twice mass of car Y. Which statement is correct?	A. Car X has half the kinetic energy of car Y B. Car X has one quarter of the kinetic energy of car Y C. Car X has twice the kinetic energy of car Y D. The tow cars have the same kinetic energy
8	A man pushes a wall and fails to displace it. He does:	A. Negative work B. Positive but not maximum work C. No work at all D. Maximum work
9	If the velocity of a body becomes half, the kinetic energy of body will become	A. One fourth B. Double C. Four times D. Half
10	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	A. 10J B. 270 J C. 90J D. 180 J

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Aleeza Ilyas
05 Aug 2022

Answer key is mostly wrong sir

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ADEEL
14 Apr 2019

..

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ahmer
02 Nov 2018

12

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Sanam khan
12 May 2018

Test Dana k bad ksa pata Chala GA k Mara konsa mcqs wrong ha 😛 I got 94 marks out of 100

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Sheza fiaz
18 Apr 2018

How can we become a member of ths website.??

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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

Work done in raising a box depends on:

If the K.E. of a body is increased by 300%, its momentum will increase by:

An engine pumps out 40 kg of water in one second. The water comes out vertically upwards with a velocity of 3ms-1 . What is the power of engine in kilowatt?

A body is dropped from a height of 20 m and rebounds to a height of 10 m. the loss of energy is:

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:

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

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:

In a gravitational field when work done by gravity is negative then

A man M1 of mass 80 kg runs up a staircase in 15s. Another man M2 also of mass 80 kg runs up the same staircase in 20s. The ratio of the power developed by them will be

The body at rest may have:

A force of 6 N act horizontally on a stationary mass of 2kg for 4s. The kineticenergy in joule is

If the velocity of a body becomes half, the kinetic energy of body will become

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

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

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?

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

An engine pumps up 100 kg of water through a height of 10m in 5s. Given that the efficiency of the engine is 60%, what is the power of the engine? (Take g = 10ms-2)

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

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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Aleeza Ilyas

ADEEL

ahmer

Sanam khan

Sheza fiaz

A man M₁ of mass 80 kg runs up a staircase in 15s. Another man M₂ also of mass 80 kg runs up the same staircase in 20s. The ratio of the power developed by them will be

An engine pumps up 100 kg of water through a height of 10m in 5s. Given that the efficiency of the engine is 60%, what is the power of the engine? (Take g = 10ms^-2)