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

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

Question # 2

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)

Question # 3

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

Question # 4

The body at rest may have:

Question # 5

Which of the following types of force can do no work on the particle on which it acts?

Question # 6

When the velocity of a body is doubled:

Question # 7

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

Question # 8

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 # 9

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

Question # 10

. 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 # 11

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

Question # 12

Which of the following work is greater?

Question # 13

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

Question # 14

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

Question # 15

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 # 16

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 # 17

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:

Question # 18

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

Question # 19

Which of the following is a unit of energy?

Question # 20

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:

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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 3 joules of work is done in 3 seconds, then power is:
A. 6 watt
B. 3 watt
C. 18 watt
D. 1 watt
3 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
4 If the K.E. of a body is increased by 300%, its momentum will increase by:
A. 100 %
B. 150 %
C. √300%
D. 175 %
5 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
6 You lift a heavy book from the floor of the room and keep it in the book-shelf having a height 2 m. In this process you take 5 seconds. The work done by you will depend upon:
A. Mass of the book and time taken
B. Weight of the book and height of the book-shelf
C. Height of the book-shelf and time taken
D. Mass of the book, height of the book-shelf and time taken
7 Ratio of dimension of K.E and power is:
A. 1:1
B. T:1
C. 1:T
D. M:J
8 A force of 6 N act horizontally on a stationary mass of 2kg for 4s. The kineticenergy in joule is
A. 12
B. 72
C. 56
D. 888
9
An elevator's motor produces 3000 W power. The speed With Which it can lift a 1000 kg load is:
A. 30.6ms-1
B. 0.306ms-1
C. 3.06ms-1
D. 300.3ms-1
10 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
A. 1
B. 4/3
C. 16/9
D. none of these

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