In this question, a statement of assertion is followed by …

Physics Work, Energy, Power and Collision Assertion & Reason MCQ (Single Correct)

In this question, a statement of assertion is followed by a statement of reason . Mark the correct choice as:

Assertion: Water at the foot of the water fall is always at different temperature from that at the top.
Reason: The potential energy of water at the top is converted into heat energy during falling.

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true but reason is not the correct explanation of assertion.

If assertion is true but reason is false.

If assertion is false but reason is true.

Text Solution

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The correct answer is:

When the water is at the top of the fall it has potential energy (when is the mass of the

water and h is the height of the fall). On falling this potential energy is converted into kinetic energy, which further converted into heat energy and so temperature of water increases.

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