First slide

Surface tension

Question

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

Moderate

A

1 :2
B

2:1
C

1 :4
D

4: 1

Solution

$Excess of pressure = \frac{4 T}{r} \propto \frac{1}{r} p_{1} \propto 1 / 2 r and ρ_{2} \propto 1 / r p_{1} / p_{2} = \frac{1}{2} or p_{1} : p_{2} = 1 : 2$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App