What is the energy required to blow a so...

What is the energy required to blow a soap bubble of radius 5 cm ? [ S.T of soap solution ` = 30 xx10^(-2)` N/m]

A

`1.884 xx10^(1)`J

B

`1.884xx10^(-2)`J

C

`1.884xx10^(1)`J

D

`1.884xx10^(2)`J

Text Solution

Verified by Experts

The correct Answer is:

B

`W = 8piTR^(2)=8xx3.14 xx30 xx10^(-2) xx25 xx10^(-4)`
` = 1.884 xx10^(-2)J`

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