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

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 # 2

Tick the conservation force:

Question # 3

The tidal energy is due to gravitational pull of :

Question # 4

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

Question # 5

Work done on a body by gravity in lifting it up to certain height is

Question # 6

The consumption of energy by a 60 W bulb in 2 minutes is:

Question # 7

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

Question # 8

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

Question # 9

The work performed on an object does not depend on

Question # 10

Work has the dimensions as that of

Question # 11

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

Question # 12

The power of an electric generating station is expressed in:

Question # 13

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 # 14

Watt x second is unit of:

Question # 15

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The total work done in moving the body up and then down through the same height in a gravitational field is equal to:
A. mgh
B. Its wight
C. Weight X height
D. Zero
2 A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:
A. Minimum Work
B. Maximum Work
C. Zero Work
D. Negative Work
3 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
4 The space around the earth in which its gravitational force acts on a body is called
A. Electric Field
B. Gravitational field
C. Magnetic field
D. Conservative field
5 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:
A. +5 X 101J
B. +5 X 102J
C. +5 X 103J
D. +5 X 104J
6 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
7 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
D. None of these
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 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 is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these

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