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 is a scalar product of

Question # 2

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

Question # 3

The ultimate source of money sources of energy is:

Question # 4

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

Question # 5

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 # 6

The work done on the body will be zero if:

Question # 7

The power of an electric generating station is expressed in:

Question # 8

The types of mechanical energy is/are:

Question # 9

Watt x second is unit of:

Question # 10

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

Question # 11

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

Question # 12

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 the direction of motion will be:

Question # 13

The work done in moving a body between two points in a conservative field is independent of the

Question # 14

A solar cell is made from:

Question # 15

Work done by the force of friction is always

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
2 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
3 Which of the following types 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
4 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B is correct
5 Work has the dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
6 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
7 A field in which the work done in moving a body along closed path is zero is called
A. Nuclear Field
B. Conservative field
C. Gravitational field
D. Non-conservative field
8 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°
9 Work is a Quantity
A. Vector
B. Scalar
C. Non-physical
D. None of these
10 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule

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