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

The energy stored in wound watch spring is

Question # 2

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 # 3

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 # 4

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 # 5

The body at rest may have:

Question # 6

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

Question # 7

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

Question # 8

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 # 9

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 # 10

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 # 11

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

Question # 12

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 # 13

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 # 14

Work done in raising a box depends on:

Question # 15

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

Question # 16

When the velocity of a body is doubled:

Question # 17

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 # 18

Which of the following is a unit of energy?

Question # 19

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 # 20

Ratio of dimension of K.E and power 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 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
A. heat energy
B. electrical energy
C. nuclear energy
D. mechanical energy
2 . 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.
A. W1 = W2
B. W2< W2
C. W1 > W2
D. W1 = W2= 0
3
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?
A. 1.2kW
B. 120kW
C. 12kW
D. 1200kW
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 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:
A. – 7 joules
B. +13 joules
C. + 7 joules
D. +11 joules
6 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
7 A man pushes a wall and fails to displace it. He does:
A. Negative work
B. Positive but not maximum work
C. No work at all
D. Maximum work
8 If the velocity of a body becomes half, the kinetic energy of body will become
A. One fourth
B. Double
C. Four times
D. Half
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
A. 20
B. 200
C. 2
D. 10
10 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

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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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