1.

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

Answer»

`1:2`
`1:4`
`2:1 `
`4:1`

SOLUTION :`(DELTA P_1)/(Delta P_2) = ( (4 SIGMA)/(r_1))/( (4sigma)/(r_2) ) = r_2/r_1 = 1/2`


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