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

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 # 2

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 # 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:

Question # 4

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

Question # 5

The energy stored in wound watch spring is

Question # 6

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 # 7

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

Question # 8

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 # 9

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 # 10

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

Question # 11

Which of the following is a unit of energy?

Question # 12

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 # 13

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

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

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

Question # 20

The body at rest may have:

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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 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
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 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 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
5 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
6 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
7 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
8
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
9 Ratio of dimension of K.E and power is:
A. 1:1
B. T:1
C. 1:T
D. M:J
10 The energy which an -e acquires when accelerated through a potential difference of 1 volt is called?
A. 1 Joule
B. 1 Electron volt
C. 1 Erg
D. 1 Watt

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