Two soap bubbles A and B are kept in a closed chamber where the air is maintained at pressure `8N//m^2`.The radii of bubbles A and B are 2cm and 4cm, respectively. Surface tension of the soap-water used to make bubbles is `0.04N//m`. Find tha ratio `n_B//n_A`, where `n_A` and `n_B` are the number of moles of air in bubbles A and B, respectively. [Neglect the effect of gravity.]

Two soap bubbles A and B are kept in a closed chamber where the air is maintained at pressure 8 N//m^(2) . The radii of bubbles A and B are 2 cm and 4 cm , respectively. Surface tension of the soap. Water used to make bubbles is 0.04 N//m . Find the ratio n_(B)//n_(A) , where n_(A) and n_(B) are the number of moles of air in bubbles A and B respectively. [Neglect the effect of gravity.]

The radii of two soap bubbles are R_(1) and R_(2) respectively. The ratio of masses of air in them will be

The work done in blowing a soap bubble of 10 cm radius is (Surface tension of the soap solution is 3/100 N/m)

The work done in increasing the radius of a soap bubble from 4 cm to 5 cm is Joule (given surface tension of soap water to be 25xx10^(-3)N//m)

A soap bubble of radius 10^(-2) m is formed . The surface tension of the soap bubble is 0.04 N/m The excess of pressure inside the bubble is

The work done in blowing a soap bubble of radius 0.2 m is (the surface tension of soap solution being 0.06 N/m )

The work done in blowing a soap bubble from a radius of 6 cm to 9 cm if surface tension of soap solution is 25xx10^(-3) N//m , is

The excess of pressure in a soap bubble of diameter 10 mm , when the surface tension is 0.04N//m is

Two soap bubbles are joined together so that they have a common surface. If their radii are 3 cm and 4 cm respectively, find the radius of the common surface.