question_answer

The excess pressure due to surface tension in a spherical liquid drop of radius r is directly proportional to [MP PMT 1987; KCET 2000]

A)                     \[r\]     

B)             \[{{r}^{2}}\]

C)             \[{{r}^{-1}}\]          

D)             \[{{r}^{-2}}\]