Why does an aneroid barometer, which measures atmospheric pressure, show a lower reading as it is carried to the top of a high mountain?

7 views 1 helpful Updated Jul 27, 2026
Appears in Class 8th
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Answer

As an aneroid barometer is carried to a higher altitude, the column of air above it decreases. Since atmospheric pressure is caused by the weight of this air column, a shorter column exerts less weight, resulting in a lower atmospheric pressure reading.

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