Physics
Assertion (A) : Water is not used as a barometric liquid because it does not stick to the glass surface.
Reason (R) : Barometric liquid should be such that should neither wet nor stick to the glass surface.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false
Fluids Pressure
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Answer
assertion is false but reason is true
Explanation
Assertion (A) is false because water is not used as a barometric liquid mainly due to it's low density, so the height of the water column would be very large to balance atmospheric pressure and it also sticks to glass, which is not desirable in a barometer.
Reason (R) is true because this is the essential property of a good barometric liquid as it should neither wet nor stick to the glass for accurate readings and clear visibility of the level.
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