Assertion: For Reynold's number $R_{e} > 2000$ , the flow of fluid is turbulent.
Reason: Inertial forces are dominant compared to the viscous forces at such high Reynold's numbers.

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

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

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If assertion is true but reason is false.

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If both the assertion and reason are false.

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If reason is true but assertion is false.

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Solution

The correct option is A If both assertion and reason are true but the reason is the correct explanation of assertion.
Reynold number
$= \frac{I n e r t i a l f o r c e p e r u n i t a r e a}{V i s c o u s f o r c e p e r u n i t a r e a}$
So for higher value of Reynold's number,inertial force is dominant.

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