Question

The pressure inside two soap bubbles is 1.01
and 1.02 atmosphers respectively. The ratio
of their volumes is
(atmospheric pressure=10 Pa)​

Answer 1

Answer:

Pressure × Radius = Surface Tension

Here the pressure is Gauge Pressure, i.e the difference between absolute pressure and atmospheric pressure

Hence ratio of gauge pressures is 1:2

Accordingly ratio of radii is 2:1

Since Volume∝radius

3

Hence ratio of volumes is 8:1

Answer 2

Pressure × Radius = Surface Tension

Here the pressure is Gauge Pressure, i.e the difference between absolute pressure and atmospheric pressure

Hence ratio of gauge pressures = 1:2

Accordingly ratio of radii is 2:1

Since Volume∝radius  =3

Hence ratio of volumes is 8:1