Question

. Take a tin-can having an air tight cap (screw cap). Remove the cap and boil some water in it. While boiling replace the cap and allow it to cool. After some time the can starts to crumble. Explain why? ​

Answer 1

Answer:

Vapours inside condense and form water creating vacuum above them. The can crumbles due to air pressure from outside. This proves that air exerts pressure.

Explanation:

Answer 2

A tin-can having an air tight cap (screw cap). Remove the cap and boil some water in it. While boiling replace the cap and allow it to cool. After some time the can starts to crumble because the vapour inside the tin-can condense and form water which creates a vacuum inside the container. The pressure outside becomes greater than the pressure inside, and the pressure difference is greater than the can is able to withstand.This proves that air exerts pressure. For this reason the can crumbles due to air pressure from outside.