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

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 # 2

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

Question # 3

When a body moves against the force of friction on a horizontal plane, the work done by the body is:

Question # 4

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

Question # 5

Tick the conservation force:

Question # 6

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

Question # 7

Work done along a closed path in a gravitational field is:

Question # 8

The work performed on an object does not depend on

Question # 9

A solar cell is made from:

Question # 10

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 # 11

The tidal energy is due to gravitational pull of :

Question # 12

Power is a :

Question # 13

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

Question # 14

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Question # 15

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

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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 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
3 The work done on the body will be zero if:
A. No force is applied on the body
B. Force is applied but no displacement
C. Angle between F(force) and d(displacement) is 90°
D. All of these are correct
4 The work done in moving a body between two points in a conservative field is independent of the
A. Direction
B. Force applied
C. Path followed by the body
D. Power
5 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
6 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force
7 Which force is not a conservative force:
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
8 If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:
A. Power
B. Work
C. Pressure
D. None of these
9 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
10 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper

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