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

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Question # 1

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

Question # 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 with the direction of motion will be:

Question # 3

The dimensions of work

Question # 4

Work is a:

Question # 5

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

Question # 6

The types of mechanical energy is/are:

Question # 7

Which of the following is not a unit of power:

Question # 8

The commercial unit of electrical energy is :

Question # 9

The tidal energy is due to gravitational pull of :

Question # 10

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 # 11

Power is a :

Question # 12

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

Question # 13

Tick the conservation force:

Question # 14

A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:

Question # 15

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 # 16

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

Question # 17

Work done is lowering the bucket into the well is:

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

Work done is independent of path followed in _______

Question # 22

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

Question # 23

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

Question # 24

Work is a Quantity

Question # 25

The angle between centripetal force and displacement of the body moving in a circle is:

Question # 26

Which force is not a conservative force?

Question # 27

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

Question # 28

Which force is not a conservative force:

Question # 29

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 # 30

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 The work done in moving a body between two points in a conservation field is independent of the:
A. Direction
B. Force applied
C. Path followed by the body
D. Power
3 In the force applied is parallel to the direction of motion, then work done is:
A. Maximum
B. Minimum
C. Zero
D. None of these
4 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
5 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
6 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
7 If work is done at the rate of 2 k j per second, then total work done is half an hour will be:
A. 0.5 Kwn
B. 2 Kwh
C. 1 Kwh
D. None of these
8 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
9 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
10 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:
A. 60°
B. 90°
C. 30°
D. 0°

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