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

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

Question # 2

The energy stored in wound watch spring is

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

In a gravitational field when work done by gravity is negative then

Question # 7

The body at rest may have:

Question # 8

Work done in raising a box depends on:

Question # 9

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:

Question # 10

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 # 11

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

Question # 12

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 # 13

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 # 14

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 # 15

A ball is thrown vertically upwards. Neglecting air resistance, which statement is correct?

Question # 16

Ratio of dimension of K.E and power is:

Question # 17

The gravity does no work, when the body moves:

Question # 18

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

Question # 19

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 # 20

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

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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 3 joules of work is done in 3 seconds, then power is:
A. 6 watt
B. 3 watt
C. 18 watt
D. 1 watt
2 Which of the following is a unit of energy?
A. unit
B. whatt
C. Horse Power
D. None of the above
3 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
4 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
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 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
7 A light and a heavy body have equal momenta. Which one has greater K.E?
A. The light body
B. The heavy body
C. The K.E are equa
D. Data is incomplete
8 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)
A. 2 sec
B. 4 sec
C. 8 sec
D. 16sec
9 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
10 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

Test Questions

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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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