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

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

Question # 2

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Question # 3

Work done by the force of friction is always

Question # 4

Work is a always done on a body when

Question # 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 is 25J. the angle which the force makes with the direction of motion will be:

Question # 6

Which of the following is not a unit of power:

Question # 7

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

Question # 8

A field in which the work done in moving a body along closed path is zero is called

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

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

Question # 11

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Question # 12

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

Question # 13

Work done is independent of path followed in _______

Question # 14

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:`

Question # 15

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:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 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
4 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
5 Work done by the force of friction is always
A. Positive
B. Zero
C. Negative
D. Maximum
6 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
7 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:
A. Power
B. Work
C. Pressure
D. None of these
8 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
D. None of these
9 The work done on the body will be zero if:
A. No force is applied on the body
B. Force is applied but no displacement
C. Angle between F(force) and d(displacement) is 90°
D. All of these are correct
10 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

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