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When a 'U' shaped slider of negligible m...

When a 'U' shaped slider of negligible mass is dipped in a soap solution and lifted, a thin film of soap is formed in the frame. It supports a weight of `2.0 xx 10^(-2) N`. If the length of the slider is 40 cm, the surface tension of the film of soap is

A

`25 Nm^(-1)`

B

`2.5 Nm^(-1)`

C

`2.5 xx 10^(-2) Nm^(-1)`

D

`2.5 xx 10^(-3) Nm^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
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