ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 4 Work and Energy

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ECAT Pre General Science Physics Chapter 4 Work and Energy

00:00
Question # 1

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

Question # 2

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

Question # 3

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

Question # 4

Teh consumption of energy by a 1000 watt heater in half an hour is:

Question # 5

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

Question # 6

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

Question # 7

A solar cell is made from:

Question # 8

The work done on the body will be zero if:

Question # 9

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

Question # 10

Work done is maximum when angle between force and displacement is

Question # 11

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

Question # 12

The value of escape velocity of Earth planet comes out to be:

Question # 13

Work is always done on a body when:

Question # 14

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 # 15

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

Question # 16

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 # 17

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

Question # 18

Escape velocity from surface of Moon as compared to that from Earth surface is:

Question # 19

Work is a

Question # 20

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

Question # 21

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Question # 22

Watt x second is unit of:

Question # 23

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

Question # 24

A solar cell converts energy of the Sun into:

Question # 25

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 # 26

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

Question # 27

Work is a Quantity

Question # 28

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 # 29

The dimensions of work

Question # 30

Work done by the force of friction is always

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
2 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
3 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
4 When velocity of moving body is doubled, the quantity which is also doubled is its:
A. K.E.
B. Acceleration
C. Momentum
D. P.E.
5 The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is
A. Much more
B. Very small
C. No amount at all
D. None of these
6 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force
7 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
8 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
9 The work done by a force, keeping an object in circular motion with constant speed is:
A. Zero J
B. 1 J
C. 0.1 J
D. 0.01 J
10 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and 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

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