Assertion :In the siphon shown in figure, pressure at P is equal to atmospheric pressure. Reason: Pressure at Q is atmospheric pressure and points P and Q are at same levels.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Pressure at all points in a liquid at same horizontal level is same, if the velocity of water at those points is same.
Here both points P and Q have zero water velocity, hence the pressure at both P and Q= $P_{0}$

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