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

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

Question # 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.

Question # 3

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 # 4

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

Question # 5

When the velocity of a body is doubled:

Question # 6

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 # 7

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

Question # 8

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

Question # 9

An elevator's motor produces 3000 W power. The speed With Which it can lift a 1000 kg load is:

Question # 10

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 # 11

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

Question # 12

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 # 13

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

Question # 14

The body at rest may have:

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

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

Question # 17

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

Question # 18

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 # 19

The energy stored in wound watch spring is

Question # 20

The gravity does no work, when the body moves:

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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 A body is dropped from a height of 20 m and rebounds to a height of 10 m. the loss of energy is:
A. 10%
B. 45%
C. 50%
D. 75%
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
A. the path taken by the suitcase
B. weight of the suitcase
C. initial and final position
D. None
3 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
4 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
5 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:
A. Zero
B. 9.8 J
C. 19.6 J
D. 329 J
6 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
7 Which of the following work is greater?
A. + 100J
B. 0 J
C. - 100J
D. Both A and B are equal
8 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
A. 1
B. 4/3
C. 16/9
D. none of these
9 Which of the following is a unit of energy?
A. unit
B. whatt
C. Horse Power
D. None of the above
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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