Question

describe an experiment to show that air exerts pressure

Answer 1

take a. tin and fill it half with water .
boil the water in the tin and let the cap be opened and heat it ,boil it
after some time after boiling the water close the tin with its cap and pour cold water on it
you will notice that the tin gets crushed this is only due to the fact that air exerts pressyre

Answer 2

Take a bucket and a glass and pour some water into the bucket and put the glass upside down into the bucket and put the glass and air will come from all the direction