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

Ratio of dimension of K.E and power is:

Question # 2

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 # 3

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:

Question # 4

A man pushes a wall and fails to displace it. He does:

Question # 5

The energy which an -e acquires when accelerated through a potential difference of 1 volt is called?

Question # 6

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 # 7

Work done in raising a box depends on:

Question # 8

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

Question # 9

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 # 10

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

Question # 11

Car X is traveling at half the speed of car Y. Car X has twice mass of car Y.
Which statement is correct?

Question # 12

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:

Question # 13

The body at rest may have:

Question # 14

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

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 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 # 18

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

Question # 19

The gravity does no work, when the body moves:

Question # 20

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

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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 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)
A. 33 kW
B. 3.3kW
C. 0.33kW
D. 0.033kW
2 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
3 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
4 If the momentum of a body is increased n times, its kinetic energy increases:
A. n times
B. 2 n times
C. √𝑛 times
D. n 2 time
5 A body is dropped from a height of 20 m and rebounds to a height of 10 m. the loss of energy is:
A. 10%
B. 45%
C. 50%
D. 75%
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 Ratio of dimension of K.E and power is:
A. 1:1
B. T:1
C. 1:T
D. M:J
8 Which of the following work is greater?
A. + 100J
B. 0 J
C. - 100J
D. Both A and B are equal
9
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:
A. 3 × 104 J
B. 6 × 104J
C. 9 × 104J
D.
12× 104 J
10 The gravity does no work, when the body moves:
A. Horizontally
B. Vertically upwards
C. Vertically downward
D. At an angle of 45o with horizontal

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