Question

4.A tumbler filled with water has an inverted tube with mercury.
(a) if the air pressure is more outside what will be the level of mercury?
(b) if the air pressure is less outside what will be the level of mercury in the tube?​

Answer 1

Answer:

(a) rise

(b) fall

Explanation:

(a) If the air/atmospheric pressure is more, then the air will push the mercury upwards and the level will rise.

(b) If the air/atmospheric pressure is less, then less air will push the mercury upwards and the level will fall.