A film of water is formed between two st...

A film of water is formed between two straight parallel wires of length 10 cm each separated by `0.5cm` If their separation is increased by `1mm` while still maintaining their parallelism, how much work will have to be done (Surface tension of water `=7.2xx10^-2(N)/(m)`)

`7.22xx10^(-6)J`

`1.44xx10^(-5)J`

`2.88xx10^(-5)J`

`5.76xx10^(-5)J`

Text Solution

Verified by Experts

The correct Answer is:

`W=2TxxDeltaAimplies2T[l(b_(2)-b_(1))]`

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