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A rectangular film of liquid is extended...

A rectangular film of liquid is extended from `(4 cm xx 2 cm)` to `(5 cm xx 4 cm)`. If the work done is `3 xx 10^(-4)J`, the value of the surface tension of the liquid is

A

`0.250 N m^(-1)`

B

`0.125 N m^(-1)`

C

`0.2 N m^(-1)`

D

`0.8 N m^(-1)`

Text Solution

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The correct Answer is:
B
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