Q. An empty tumblerlowered into a glass beaker containing water on tilting shows bubbles of air coming out but when not tilted bubbles are not seen.

Asked by Deepak | 6th May, 2019, 11:08: AM

Expert Answer:

An empty tumbler lowered into a glass beaker containing water on tilting shows bubbles of air coming out because, 

when the tumbler is tilted, water enters inside it and air comes out in the form of bubbles.

But when tumbler is not tilted, the pressure inside the tumbler and outside is same. So the air does not come out and bubbles are not seen.

 
 

Answered by Varsha | 7th May, 2019, 12:20: PM