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Work and Energy -Practice MCQ

Work & EnergyThe work and Energy are related subjects of science. In physics , work does not happen unless , the object on which force is applied moves. And movement in an object by application of force creates kinetic energy which ultimately  transferred in object as potential energy. Here are 10 multiple choice question to take your test on the subject of “Work & Energy”

10 MCQ on Work & Energy

Work and Energy part - 1

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Question 1
A car is accelerating on a levelled plane and acquires a velocity 3 times of its initial velocity. During this process, the potential energy of the car :
A
does not change
B
becomes 1.5 times that of initial potential energy
C
becomes 3 times that of initial potential energy
D
becomes 9 times that of initial potential energy
Question 2
The unit of work and energy is joule which is named after James Prescott Joule . He was a .................physicist.
A
Swedish
B
American
C
French
D
British
Question 3
In case of negative work, the angle between the force & displacement is :
A
B
45º
C
90º
D
180º
Question 4
An iron rod of mass 10kg has the same diameter as an aluminium rod of mass 3.5 kg. Both the rods are dropped simultaneously from a tower. When they are 10m above the ground, they have the same:
A
acceleration
B
momentum
C
potential energy
D
kinetic energy
Question 5
A boy is carrying a suitcase of 3kg mass on her back and moves 200m on a levelled road. If the value of g be 10m/s2 , the work done by the boy against the gravitational force will be:
A
6000 J
B
0.6 J
C
0 J
D
6 J
Question 6
The work done on an object does not depends on the :
A
displacement
B
angle between force and displacement
C
force applied
D
initial velocity of the object
Question 7
Water stored in a dam possesses :
A
no energy
B
electrical energy
C
kinetic energy
D
potential energy
Question 8
The momentum of a bullet of mass 20g fired from a gun is 10 kg.m/s. The kinetic energy of this bullet in KJ will be :
A
5
B
1.5
C
2.5
D
25
Question 9
A boy weighing 400N climbs a vertical ladder. If the value of g be 10 m s-2 , the work done by her after climbing 2 m will be :
A
200 J
B
800 J
C
8000 J
D
2000 J
Question 10
Which of the following does not possess the ability to do work not because of motion?
A
a sparrow flying in the sky
B
a sparrow moving slowly on the ground
C
a sparrow in the nest on a tree
D
a squirrel going up a tree
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There are 10 questions to complete.