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 conservative force

Question # 2

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 # 3

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

Question # 4

When velocity of moving body is doubled, the quantity which is also doubled is its:

Question # 5

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:

Question # 6

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

Question # 7

A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:

Question # 8

SI Unit of work is

Question # 9

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

Question # 10

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

Question # 11

Work done in lower and bucket into the well is:

Question # 12

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 # 13

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

Question # 14

The dimensions of work

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
3 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
4 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
5 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
6 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
7 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
8 A 2 kg block is held 1 m above floor for 50 seconds. The work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
9 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
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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