ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

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

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

Question # 2

The field in which work done in moving a body between two points depends upon the path followed is called:

Question # 3

The value of escape velocity of Earth planet comes out to be:

Question # 4

Work done is independent of path followed in _______

Question # 5

Work-energy principle states that work done on the body by applied force is equal to change in:

Question # 6

Watt x second is unit of:

Question # 7

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

Question # 8

Which one is conservative force

Question # 9

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

Question # 10

Which force is not a conservative force:

Question # 11

Work is a scalar product of

Question # 12

Work has a dimension as that of:

Question # 13

Work is a

Question # 14

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

Question # 15

Which force is not a conservative force?

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
2 A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:
A. 0°
B. 30°
C. 60°
D. 90°
3 When a wall is pushed by a person very strongly, he has done:
A. Maximum work
B. Zero work
C. Positive work
D. Negative work
4 Work has the dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
5 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
6 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
7 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
8 If force and displacement are in opposite direction, the work done is taken as:
A. Positive work
B. Negative work
C. Zero work
D. Infinite work
9 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force
10 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
D. None of these

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