The excess pressure in soap bubble is `10(N)/(m^(2))` if eight soap bubble are combined to form a big soap bubble excess pressure in big bubble is (in `(N)/(m^(2)))`

Options

A. 5
B. 10
C. 20
D. 2.5

Explanation

`(4)/(3)piR^(3)=n(4)/(3)pir^(3),R=2r,p=(4T)/(R)implies(P_("big"))/(P_("small"))=(r)/(R)`