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

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

Question # 2

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

Question # 3

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

Question # 4

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

Question # 5

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 with the direction of motion will be:

Question # 6

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

Question # 7

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

Question # 8

A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:

Question # 9

The tidal energy is produced due to rotation of Earth relative to:

Question # 10

Work is product of:

Question # 11

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:

Question # 12

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

Question # 13

Work is always done on a body when:

Question # 14

Energy stored in the spring of a watch is called

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The field in which work done is moving body between two points depends upon the path followed is called:
A. Conservative filed
B. Non-conservative field
C. Electric field
D. None of these
2 Which force is not a conservative force?
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
3 Energy stored in the spring of a watch is called
A. Potential energy
B. Kinetic energy
C. Nuclear energy
D. Elastic potential
4 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
5 Work is a Quantity
A. Vector
B. Scalar
C. Non-physical
D. None of these
6 The tidal energy is produced due to rotation of Earth relative to:
A. Moon
B. Sun
C. Oceans
D. Water
7 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
8 Power is a :
A. Vector quantity
B. Base quantity
C. Scalar quantity
D. None of these
9 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
10 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

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