Question

Multiple choice questions
s one
One thousand small water droplets of equal size
combine to form a big drop. The ratio of the
final surface
energy to the total initial surface
energy of water droplets is..

.​

Answer 1

Answer:

Let the radius of smaller radius be r and bigger be R.

Since volume remains constant, thus

3

4πR

3

=1000×

3

4πr

3

We get R=10r

Ratio of final surface energy to initial is

W

i

W

f

=

T×1000×4πr

2

T×4πR

2

W

i

W

f

=

1000r

2

(10r)

2

=1:10