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

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Question # 1

The power needed to lift amass of 5000g to height of 1min 2 second is

Question # 2

The gravity does no work, when the body moves:

Question # 3

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

Question # 4

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 # 5

Which of the following work is greater?

Question # 6

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

Question # 7

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 # 8

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 # 9

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

Question # 10

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

Question # 11

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 # 12

Which of the following is a unit of energy?

Question # 13

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 # 14

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 # 15

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 # 16

Work done in raising a box depends on:

Question # 17

The body at rest may have:

Question # 18

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 # 19

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

Question # 20

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:

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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 Class Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Which of the following work is greater?
A. + 100J
B. 0 J
C. - 100J
D. Both A and B are equal
2 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:
A. Zero
B. 2J
C. 60J
D. 600J
3 A body of mass m kg is lifted by a man to a height of one meter in 30 sec. Another man lifts the same mass to the same height in 60 sec. The work done by them are in the ratio
A. 1: 2
B. 1: 1
C. 2: 1
D. 4: 1
4
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
5 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
6 The energy stored in wound watch spring is
A. K.E.
B. P.E.
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 Ratio of dimension of K.E and power is:
A. 1:1
B. T:1
C. 1:T
D. M:J
10 If the stone is thrown up vertically and return to ground, its potential energy is maximum
A. during the upward journey
B. during the upward journey
C. at the maximum height
D. at the bottom

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