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

Which of the following is not a unit of power:

Question # 3

When a falling body hits ground, its KE changes to _____ energy.

Question # 4

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:

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

The power of an electric generating station is expressed in:

Question # 9

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Question # 10

Which force is not a conservative force?

Question # 11

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

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 in 25J. The angle which the force makes with the direction of motion will be

Question # 13

The unit of work in CGS system is

Question # 14

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

Question # 15

Which one is conservative force

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
2 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:
A. 60°
B. 90°
C. 30°
D. 0°
3 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
4 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
5 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
6 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
7 The angle between centripetal force and displacement of the body moving in a circle is:
A. 0°
B. 90°
C. 180°
D. None of these
8 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
9 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
10 The space around the earth within it exerts a force of attraction on other bodies of known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field

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