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

00:00
Question # 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?

Question # 2

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 # 3

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

Question # 4

Which of the following is a unit of energy?

Question # 5

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 # 6

The body at rest may have:

Question # 7

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

Question # 8

. 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 # 9

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 # 10

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

Question # 11

When a person lifts a body from ground work done by lifting force is?

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

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 # 16

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

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

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

Question # 19

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 # 20

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)

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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 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
2
Car X is traveling at half the speed of car Y. Car X has twice mass of car Y.
Which statement is correct?
A. Car X has half the kinetic energy of car Y
B. Car X has one quarter of the kinetic energy of car Y
C. Car X has twice the kinetic energy of car Y
D. The tow cars have the same kinetic energy
3 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
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 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
6 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
7 In a gravitational field when work done by gravity is negative then
A. P.E increases
B. P.E decrease
C. None
D. P.E remains same
8 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
A. 20
B. 200
C. 2
D. 10
9 The power needed to lift amass of 5000g to height of 1min 2 second is
A. 2.45 watt
B. 24.5 watt
C. 245 watt
D. 2.45 k watt
10 If the K.E. of a body is increased by 300%, its momentum will increase by:
A. 100 %
B. 150 %
C. √300%
D. 175 %

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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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