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Question
A square wire frame of side L is dipped in a liquid. On taking out, a membrane is formed the surface tension of liquid is T, the force acting on the frame will be
A square wire frame of side L is dipped in a liquid. On taking out, a membrane is formed the surface tension of liquid is T, the force acting on the frame will be
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Solution
The correct option is C 8 TL
Force
acting on the square due to surface tension is given by
F
= T x lenght of the square in contact with the liquid
= T x (2 x 4L)
=8TL
Force acting on the square due to surface tension is given by
F = T x lenght of the square in contact with the liquid
= T x (2 x 4L)
=8TL
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