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 energy stored in wound watch spring is

Question # 3

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

Question # 4

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 # 5

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 # 6

The gravity does no work, when the body moves:

Question # 7

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:

Question # 8

When the velocity of a body is doubled:

Question # 9

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)

Question # 10

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

Question # 11

The body at rest may have:

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

A ball is thrown vertically upwards. Neglecting air resistance, which statement is correct?

Question # 16

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

Question # 17

A stone is thrown up from the surface of earth when it reaches at maximum height. its total energy is equal to

Question # 18

A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 joules, the angle which the force makes with the direction of motion of the body is?

Question # 19

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

Question # 20

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

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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 Class Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 In an explosion a body breaks up into two pieces of unequal masses. In this:
A. Both parts will have numerically equal momentum
B. Lighter part will have more momentum
C. Heavier part will have more momentum
D. Both parts will have equal kinetic energy
2 When the velocity of a body is doubled:
A. Its K.E is doubled
B. Its P.E is doubled
C. Its momentum is doubled
D. Its acceleration is doubled
3 A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 joules, the angle which the force makes with the direction of motion of the body is?
A. 0 Degree
B. 30 Degree
C. 60 Degree
D. 90 Degree
4 Work done in raising a box depends on:
A. How fast it is raised
B. The strength of the man
C. The height by which it is raised
D. None of the above
5 When a person lifts a body from ground work done by lifting force is?
A. Positive
B. Negative
C. Zero
D. Half of positive maximum
6 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
7 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
A. 150 KW
B. 1.5 KW
C. heat energy
D. chemical energy
8 Ratio of dimension of K.E and power is:
A. 1:1
B. T:1
C. 1:T
D. M:J
9 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
10 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

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