Fluid Mechanics: Pressure Advanced MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Pressure AdvancedHardQuestion 30988

Question

Aneroid barometer works without liquid because it uses:

A
Gas pressure
B
Flexible sealed evacuated metal bellows
Correct
C
Spring force
D
Magnetic force

Correct answer

Flexible sealed evacuated metal bellows

Explanation

Aneroid means 'no fluid'. A sealed evacuated metal capsule compresses/expands with atmospheric pressure, mechanical amplification converts this to a reading.

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