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When a manometer is connected to a gas o...

When a manometer is connected to a gas of pressure P above atmospheric pressure, the level in the left hand limb rises 1 cm to point Mas shown in the diagram. What is likely the level in the right hand limb if a new gas pressure is P below atmospheric pressure?

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Text Solution

Verified by Experts

The correct Answer is:
A
When the pressure of the gas decreases, the mercury level in the left limb will decrease 1 cm below the original level (or 2 cm below point M). Hence, the mercury level in the right limb will be pushed upwards.
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