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 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 # 2

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

Question # 3

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

Question # 4

SI Unit of work is

Question # 5

The tidal energy is due to gravitational pull of :

Question # 6

Work has a dimension as that of:

Question # 7

The energy stored int he water of the dam is:

Question # 8

Work is a:

Question # 9

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

Question # 10

If one newton force acts on a body and displaces the body through 1m work done on body is

Question # 11

Which of the following is not a unit of power:

Question # 12

Most of the geysers occur in:

Question # 13

Maximum work is done when force and displacement are

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 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:
A. +5 x 101J
B. +5 x 102J
C. +5 x 103J
D. +5 x 104J
3 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
4 A field in which the work done in moving a body along closed path is zero is called
A. Nuclear Field
B. Conservative field
C. Gravitational field
D. Non-conservative field
5 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
6 The work done 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
7 A field in which the work done is moving a body along closed path is zero is called:
A. Nuclear filed
B. Conservative field
C. Gravitational field
D. Non-conservative field
8 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
9 The work done by a force keeping an object in circular motion with constant speed is:
A. Zero J.
B. 0.1 J
C. 1 J
D. 0.01 J
10 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]

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