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

Which of the following is not a unit of power:

Question # 2

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

Question # 3

The work performed on an object does not depend on:

Question # 4

Energy stored in the spring of a watch is called

Question # 5

Tick the conservative force

Question # 6

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:

Question # 7

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 # 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:

Question # 9

Maximum work is done when force and displacement are

Question # 10

Work done in lower and bucket into the well is:

Question # 11

Work done is maximum when angle between force and displacement is

Question # 12

1 J = ________?

Question # 13

Work is a

Question # 14

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

Question # 15

Work is product of:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The field in which work done in moving a body between two points depends upon the path followed is called:
A. Conservative field
B. Non-conservative field
C. Electric field
D. None of these
2 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
3 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
4 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
5 Work done by the force of friction is always
A. Positive
B. Zero
C. Negative
D. Maximum
6 The value of escape velocity of Earth planet comes out to be:
A. 11 m/sec
B. 11 km/sec
C. 11 km/hour
D. 11 cm/sec
7 A 2 kg block is held 1 m above floor for 50 seconds. The work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
8 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
9 In the force applied to parallel to the direction of motion, then the work done is:
A. Positive
B. Negative
C. Zero
D. None of these
10 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b

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