A straw 6 cm long floats on water. The w...

A straw `6 cm` long floats on water. The water film on one side has surface tension of `50 dyn//cm`. On the other side, camphor reduces the surface tension to `40 dyn//cm`. The resultant force acting on the straw is

60 dyne

10 dyne

30 dyne

0 dyne

Text Solution

Verified by Experts

The correct Answer is:

`vecF=vec(F_(1))+vec(F_(2))=(T_(1)-T_(2))l`

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