Aiims exam question

Two soap bubbles have radii in the ratio 2 : 1. What is the ratio of excess pressure inside them?

Sweety
07 मार्च
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  Naaz
- 04 जून
1:2
- 0 टिप्पणी
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rojee

saurabh

saurabh

rojee
- Deepshikha
- 10 मई
Excess pressure inside a bubble of radius R and surface tension T is given by $P_e\:=\:\frac{4T}{R}$.
Therefore excess pressure is inversely proportional to the radius.
So $\frac{P_1}{P_2}\:=\:\frac{R_2}{R_1}\:=\:\frac{1}{2}$.
So the ratio of excess pressure inside them will be 1:2.

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