Which of the following energy change involves frictional force?
i. Potential energy to sound energy
ii. Chemical energy to heat energy
iii. Kinetic energy to heat energy
iv. Chemical energy to heat energy
Choose the correct option among the following:
Answer: D
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A microphone converts:
Answer: B
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An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same:
Answer: C
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The work done on an object does not depend upon the:
Answer: C
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A body is falling from a height h. After it has fallen to a height of h/2, it will possess:
Answer: D
No answer description available for this question.