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

Chapter 3 of Physics is an essential part of the MDCAT preparation. The students preparing for the exam must solve the MCQs available on this platform. For the convenience of the students, the answers are also uploaded here so the students can learn about their preparation level for the exam. The Chapter on Rotational and Circular Motion has various formulas that the students must memorize.

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

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

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MDCAT Physics Chapter 3 Work ,Energy & Power Online Test

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Question # 1

A light and a heavy body have equal momenta. Which one has greater K.E?

Question # 2

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

Question # 3

Ratio of dimension of K.E and power is:

Question # 4

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

Question # 5

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

Question # 6

An elevator's motor produces 3000 W power. The speed With Which it can lift a 1000 kg load is:

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

A body of mass 3 Kg lies on the surface on the table 2m high. It is moved on the surface by 4m. The change of P.E will be:

Question # 11

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?

Question # 12

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?

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

Which of the following work is greater?

Question # 17

. 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.

Question # 18

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

Question # 19

The body at rest may have:

Question # 20

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)

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Besides cramming, the students should use logic to solve the questions of Physics. The candidates make sure to allocate the proper time to all the topics in this chapter. The practice helps the students to get good scores and strengthen their preparation before the commencement of the MDCAT exam. To get more information about the preparation of MDCAT, stay in touch with us and get a hand on the preparation material.

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MCAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Ratio of dimension of K.E and power is:
A. 1:1
B. T:1
C. 1:T
D. M:J
2 A body of mass 3 Kg lies on the surface on the table 2m high. It is moved on the surface by 4m. The change of P.E will be:
A. Zero
B. 9.8 J
C. 19.6 J
D. 329 J
3 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
4 Which of the following types of force can do no work on the particle on which it acts?
A. Frictional force
B. Gravitational force
C. Elastic force
D. Centripetal force
5 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
6 If the K.E. of a body is increased by 300%, its momentum will increase by:
A. 100 %
B. 150 %
C. √300%
D. 175 %
7 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
8 3 joules of work is done in 3 seconds, then power is:
A. 6 watt
B. 3 watt
C. 18 watt
D. 1 watt
9 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:
A. The same
B. Doubled
C. Halved
D. Four times
10 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

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  • Aleeza Ilyas

    Aleeza Ilyas

    05 Aug 2022

    Answer key is mostly wrong sir

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  • ADEEL

    ADEEL

    14 Apr 2019

    ..

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  • ahmer

    ahmer

    02 Nov 2018

    12

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  • Sanam khan

    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

    Sheza fiaz

    18 Apr 2018

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

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