Properties Of Solids And Liquids Question 309
Question: If the surface tension of a soap solution is 0.03 MKS units, then the excess of pressure inside a soap bubble of diameter 6 mm over the atmospheric pressure will be
Options:
A) Less than$ 40N/m^{2} $
B) Greater than $ 40N/m^{2} $
C) Less than$ 20N/m^{2} $
D) Greater than $ 20N/m^{2} $
Show Answer
Answer:
Correct Answer: B
Solution:
$ \Delta P=\frac{4T}{r}=40\ N/m^{2} $
