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

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

Question # 2

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

Question # 3

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 # 4

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 # 5

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

Question # 6

Which of the following work is greater?

Question # 7

The body at rest may have:

Question # 8

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

Question # 9

Ratio of dimension of K.E and power is:

Question # 10

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

Question # 11

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 # 12

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 # 13

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 # 14

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

Question # 15

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 # 16

Work done in raising a box depends on:

Question # 17

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

Question # 18

The gravity does no work, when the body moves:

Question # 19

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 # 20

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:

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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 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
2 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
3 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
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 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
6 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
7
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
8
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
9 The body at rest may have:
A. Energy
B. Momentum
C. Speed
D. Velocity
10 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

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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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