Question

state true or false

1.Pressure can be increased or decreased by changing the area on which a force acts.

2. Gas does not exert pressure on the walls of the container.

3. Atmospheric pressure decreases with altitude.

Answer 1

1 and 3 is true and 2 is false as gases exert pressure on walls of container

Answer 2

HEYA!

HERE IS YOUR ANSWER..

'1. TRUE.. yes since pressure is indirectly proportional to area.. we can change it
2. false.. gas exerts a lot of pressure on all sides of a container.. this is known as vapour pressure..

3. true.. atmospheric pfressure decreases with altitude..

hope this helps you