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 force and displacement are perpendicular to each other than work is equal to

Question # 2

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

Question # 3

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

Question # 4

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 # 5

The work performed on an object does not depend on:

Question # 6

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 # 7

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

Question # 8

The types of mechanical energy is/are:

Question # 9

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

Question # 10

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

Question # 11

The work performed on an object does not depend on:

Question # 12

Which one is conservative force

Question # 13

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 # 14

Work done is independent of path followed in _______

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done on a body by gravity in lifting it up to certain height is
A. Maximum
B. Minimum
C. Zero
D. Negative
2 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
3 Which of the following type of force can do no work on the particle on which it acts:
A. Frictional force
B. Gravitational force
C. Electric force
D. Centripetal force
4 If force and displacement are in opposite direction, the work done is taken as
A. Positive work
B. Negative work
C. Zero work
D. Infinite work
5 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
6 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
7 Which of the following types of force can do no work on the particle on which it acts
A. Frictional force
B. Gravitational force
C. Electric force
D. Centripetal force
8 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
9 The energy stored int he water of the dam is:
A. Electric energy
B. Kinetic energy
C. Potential energy
D. None of these
10 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum

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