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

When a wall is pushed by a person very strongly, he has done:

Question # 2

Work is a

Question # 3

Work done in lower and bucket into the well is:

Question # 4

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

Question # 5

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 # 6

Work has the dimension as that of:

Question # 7

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

Question # 8

In the force applied to parallel to the direction of motion, then the work done is:

Question # 9

The work done on the body will be zero if:

Question # 10

The work done by a force keeping an object in circular motion with constant speed is:

Question # 11

Tick the conservation force:

Question # 12

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 # 13

The work done by a force, keeping an object in circular motion with constant speed is:

Question # 14

Watt x second is unit of:

Question # 15

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:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
2 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
3 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
4 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:
A. 0°
B. 30°
C. 60°
D. 90°
5 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
6 Energy stored in the spring of a watch is called
A. Potential energy
B. Kinetic energy
C. Nuclear energy
D. Elastic potential
7 A laborer carrying a load on his head moves from the 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
8 The work done by a force, keeping an object in circular motion with constant speed is:
A. Zero J
B. 1 J
C. 0.1 J
D. 0.01 J
9 Work-energy principle states that work done on the body by applied force is equal to change in:
A. Potential energy
B. Kinetic nergy
C. Linear momentum
D. None of these
10 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these

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