Question

work done to increase volume of drop from v to nv is​

Answer 1

Explanation:

ANSWER

Let the radius of the bubble with volume V be r.

Then the radius of the bubble with volume 2V is 2

1/3

r.

Work is only because of change in surface energy.

Ratio of work done = Ratio of surface energy =Rratio of surface area

W

W

1

=

4πr

2

4π(2

1/3

r)

2

⟹W

1

=2

2/3

W