Question

1000 small water drops of equal size combine to form a big drop. The ratio of final surface energy to the total initial surface energy is

• A. 10 : 1
• B. 1 : 10
• C. 1000 : 1
• D. 1 : 1000

Hint:

When $n$ drops combine, $R = n^{1/3}r$. The surface area ratio is $A_{final}/A_{initial} = n^{2/3}/n = n^{-1/3}$. Here $1000^{-1/3} = 1/10$.

Answer 1

The Correct Option is A