Question

One thousand small water drops of epual size combine to form a big drop. The ratio of the final surface energy to the total initial surface energy is

Answer 1

Answer:

Small drop radius =r

Large drop radius =R

Volume equating →1000r

3

=R

3

⇒10r=R

SE

i

SE

f

=

10004πr

2

T

4πR

2

T

=

1000r

2

(10r)

2

=

10

1