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A square wire frame of size L is dipped...

A square wire frame of size L is dipped in a liquid . On taking out , a membrane is formed . If the surface tension of liquid is T, then force acting per unit length of the frame is

A

2 TL

B

4 TL

C

TL

D

`(TL)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
Force on each side =2TL (due to two surface).
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