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

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

Question # 2

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

Question # 3

Power is a :

Question # 4

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:

Question # 5

Work has the dimensions as that of

Question # 6

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is:

Question # 7

Which of the following type of force can do no work on the particle on which it acts:

Question # 8

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

Question # 9

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 # 10

Work done is lowering the bucket into the well is:

Question # 11

Work has the dimension as that of:

Question # 12

Work has a dimension as that of:

Question # 13

The power of an electric generating station is expressed in:

Question # 14

Tick the conservative force

Question # 15

Work done is independent of path followed in _______

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
2 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
3 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A and B is correct
D. Both A and B is correct
4 Work is a always done on a body when
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B are correct
5 Power is a :
A. Vector quantity
B. Base quantity
C. Scalar quantity
D. None of these
6 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force
7 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
8 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.
9 A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:`
A. Minimum work
B.
Maximum work
C. Zero work
D. Negative work
10 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

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