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

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Question # 2

The work done on the body will be zero if:

Question # 3

Work is a Quantity

Question # 4

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

Question # 5

The energy stored int he water of the dam is:

Question # 6

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

Question # 7

Work done is maximum when angle between force and displacement is:

Question # 8

Which force is not a conservative force?

Question # 9

The angle between centripetal force and displacement of the body moving in a circle is:

Question # 10

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

Question # 11

Work done is lowering the bucket into the well is:

Question # 12

Work is a scalar product of

Question # 13

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

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
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 Work done by the force of friction is always
A. Positive
B. Zero
C. Negative
D. Maximum
4 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:
A. 1.25 J
B. 12.5 J
C. 125 J
D. None of these
5 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
6 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force
7 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
8 The work performed on an object does not depend on:
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
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:
A. 0°
B. 30°
C. 60°
D. 90°
10 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power

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