A U-shaped wire is dipped in a soap solution, and removed. A thin soap film formed between the wire
Channel: Doubtnut
Date: 2020-08-30

A U-shaped wire is dipped in a soap solution, and removed. A thin soap film formed between the wire and a light slider supports a weight of `1.5xx10^(-2)N` (which includes the small weigh of the slider). The length of the slider is 30cm. What is the surface tension of the film?