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

Work done by the force of friction is always

Question # 2

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

Question # 3

Which one is conservative force

Question # 4

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

Question # 5

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be

Question # 6

The work performed on an object does not depend on:

Question # 7

The space around the earth in which its gravitational force acts on a body is called

Question # 8

The commercial unit of electrical energy is :

Question # 9

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is:

Question # 10

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is

Question # 11

Work is a:

Question # 12

The work done on the body will be zero if:

Question # 13

Energy stored in the spring of a watch is called

Question # 14

Work is a always done on a body when

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Energy stored in the spring of a watch is called
A. Potential energy
B. Kinetic energy
C. Nuclear energy
D. Elastic potential
2 The energy stored int he water of the dam is:
A. Electric energy
B. Kinetic energy
C. Potential energy
D. None of these
3 Work done on a body by gravity in lifting it up to certain height is
A. Maximum
B. Minimum
C. Zero
D. Negative
4 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
5 When the body is moves against the force of friction on a horizontal plane, the work done by the body is:
A. Positive
B. Negative
C. Zero
D. None of these
6 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
7 The value of escape velocity of Earth planet comes out to be:
A. 11 m/sec
B. 11 km/sec
C. 11 km/hour
D. 11 cm/sec
8 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
9 The work done by a force, keeping an object in circular motion with constant speed is:
A. Zero J
B. 1 J
C. 0.1 J
D. 0.01 J
10 Power is a :
A. Vector quantity
B. Base quantity
C. Scalar quantity
D. None of these

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