Question

If the mass of the sheet at the top of the aneroid barometer used as an altimeter is increased, what will be the effect on the reading?

• A. It will reduce.
• B. It will increase.
• C. No effect.
• D. Can't be determined

Answer 1

The correct option is B It will increase.

If the top sheet in an aneroid barometer is heavier, it will displace lesser. So, it gives reading corresponding to a lower pressure with a lighter thin sheet. Lower pressure is observed at more heights and hence, the reading of the altimeter will increase.