Class 9 Physics MCQs – Practice Test 14 (Chapter 9)

Work and Energy MCQ with Answers PDF Download – Test 14

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Work and Energy MCQ – Practice Test 14 PDF Download

MCQ 66: The ratio of required output to input is called:

efficiency
deficiency
loss of energy
gain of energy

MCQ 67: When a body vibrates, it produces:

sound
water
heat
electricity

MCQ 68: 1 joule is equal to:

1 N × 1 m
1 N + 1 m
1 N - 1 m
1 G9 × 1 m

MCQ 69: In nuclear power plants, we get energy as a result of:

molecular reaction
potential reaction
nuclear reaction
fission reaction

MCQ 70: The potential energy is given by:

w * h
f * s
mv
ma

Work and Energy MCQ App & e-Book – Class 9 Physics Entrance Exam

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