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

If force and displacement are in opposite direction, the work done is taken as

Question # 2

The work done by a force, keeping an object in circular motion with constant speed is:

Question # 3

In the force applied is parallel to the direction of motion, then work done is:

Question # 4

Work is product of:

Question # 5

When velocity of moving body is doubled, the quantity which is also doubled is its:

Question # 6

Which of the following is not a unit of power:

Question # 7

If force and displacement are in opposite direction, the work done is taken as:

Question # 8

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

Question # 9

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:

Question # 10

Work is a

Question # 11

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Question # 12

A field in which the work done is moving a body along closed path is zero is called:

Question # 13

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

Question # 14

The work performed on an object does not depend on

Question # 15

The ultimate source of money sources of energy is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
2 In the force applied is parallel to the direction of motion, then work done is:
A. Maximum
B. Minimum
C. Zero
D. None of these
3 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
4 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
5 Work is a Quantity
A. Vector
B. Scalar
C. Non-physical
D. None of these
6 Which of the following type of force can do no work on the particle on which it acts:
A. Frictional force
B. Gravitational force
C. Electric force
D. Centripetal force
7 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
8 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.
9 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
10 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt

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