Questions

TRUE / FALSE

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13 questions · timed · auto-graded

Question 21 Mark
The energy stored in an object due to its raised position is known as elastic potential energy.
Answer
False.
Correct : The energy stored in an object due to its raised position is known as gravitational potential energy.
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Question 41 Mark
Kinetic energy of an object is the energy stored in it.
Answer
False.
Correct : Potential energy of an object is the energy stored in it.
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Question 61 Mark
Power and energy means the same.
Answer
False.
Correct : Energy is the capacity to do work whereas power is the rate of doing work.
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Question 81 Mark
Roller coaster ride is an example of transformation of energy between potential and kinetic energy.
Answer
true
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Question 91 Mark
The sum of potential and kinetic energy keeps changing for any system.
Answer
False.
Correct : The sum of potential and kinetic energy remains the same for any system.
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Question 121 Mark
If a car and a motorcycle are running at the same speed, then both will have the same kinetic energy.
Answer
False.
Correct : If a car and a motorcycle are running at the same speed, then both will have different energy because they have different mass.
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Question 131 Mark
Work is said to be done only if a force is applied on a body.
Answer
False.
Correct : Work is said to be done only if a force is applied on a body displaces it.
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TRUE / FALSE - PHYSICS STD 8 Questions - Vidyadip