ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

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

Try The 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

Tick the conservation force:

Question # 2

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

Question # 3

Maximum work is done when force and displacement are

Question # 4

When a body moves against the force of friction on a horizontal plane, the work done by the body is:

Question # 5

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

Question # 6

Work done in lower and bucket into the well is:

Question # 7

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

Question # 8

Which of the following is not a unit of power:

Question # 9

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

Question # 10

Work done is independent of path followed in _______

Question # 11

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

Question # 12

The commercial unit of electrical energy is :

Question # 13

Work has the dimensions as that of

Question # 14

Which one is conservative force

Question # 15

Tick the conservative force

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
2 The consumption of energy by a 60 W bulb in 2 minutes is:
A. 2 watt-hour
B. 120 watt-hour
C. 30 watt-hour
D. None of these
3 When a wall is pushed by a person very strongly, he has done:
A. Maximum work
B. Zero work
C. Positive work
D. Negative work
4 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
5 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
A. 60°
B. 90°
C. 30°
D. 0°
6 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
7 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
8 When two protons are brought are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
9 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
10 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

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