ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 4 Work and Energy

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ECAT Physics Chapter 4 Work and Energy

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Question # 1

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

Question # 2

The work performed on an object does not depend on

Question # 3

Work is always done on a body when:

Question # 4

Escape velocity from surface of Moon as compared to that from Earth surface is:

Question # 5

The work performed on an object does not depend on:

Question # 6

Which force is not a conservative force?

Question # 7

When two protons are brought are brought closer potential energy of both of them:

Question # 8

The tidal energy is produced due to rotation of Earth relative to:

Question # 9

Work is always done on a body when:

Question # 10

The consumption of energy by a 60 W bulb in 2 minutes is:

Question # 11

Work done is lowering the bucket into the well is:

Question # 12

If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:

Question # 13

Work is a scalar product of

Question # 14

The space around the earth within it exerts a force of attraction on other bodies of known as:

Question # 15

Which of the following type of force can do no work on the particle on which it acts:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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 J, the angle which force makes with the direction of motion of a body is:
A. 0°
B. 30°
C. 60°
D. 90°
2 A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. the angle which the force makes with the direction of motion will be:
A. 60°
B. 90°
C. 30°
D. 0°
3 Energy stored in the spring of a watch is called
A. Potential energy
B. Kinetic energy
C. Nuclear energy
D. Elastic potential
4 The Space around the Earth within which it exerts a force of attraction on other bodies is known as
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
5 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
6 The energy stored int he water of the dam is:
A. Electric energy
B. Kinetic energy
C. Potential energy
D. None of these
7 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
8 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A and B is correct
D. Both A and B is correct
9 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
10 When velocity of moving body is doubled, the quantity which is also doubled is its:
A. K.E.
B. Acceleration
C. Momentum
D. P.E.

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