Properties Of Solids And Liquids Question 362
Question: Radius of a soap bubble is increased from R to 2R work done in this process in terms of surface tension is [BHU 2003, RPET 2001; CPMT 2004]
Options:
A) $ 24\pi R^{2}S $
B)$ 48\pi R^{2}S $
C) $ 12\pi R^{2}S $
D)$ 36\pi R^{2}S $
Show Answer
Answer:
Correct Answer: A
Solution:
$ W=8\pi S(R _{2}^{2}-R _{1}^{2})=8\pi S[{{(2R)}^{2}}-R^{2}]=24\pi R^{2}S $
