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Reynold's Number

Assertion: A ...

Question

Assertion: A raindrop after falling through some height attains a constant velocity

Reason: At constant velocity, the viscous drag is equal to its weight.

A

Both assertion and reason are true and reason is correct explanation of assertion.

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B

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

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C

Assertion is true but reason is false.

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D

Both assertion and reason are false.

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Solution

The correct option is A Assertion is true but reason is false.
After falling through some height, the raindrops weight will be balanced by the viscous force of the air of the drop. It than attains constant velocity.

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Reynold's Number

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