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Question

Physics Question on mechanical properties of fluid

The soap bubbles radii in the ratio 2:12 : 1 ratio of excess pressure inside there is:

A

1:04

B

4:01

C

2:01

D

1:02

Answer

1:02

Explanation

Solution

P1rP \propto \frac{1}{r}
hence, P1P2=r2r1=12\frac{P_{1}}{P_{2}}=\frac{r_{2}}{r_{1}}=\frac{1}{2}
P1:P2=1:2P_{1}: P_{2}=1: 2