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  • A square frame of side L is dipped in a liquid . On taking out , a membrane is formed . If the surface tension of the liquid is T , the force cating on the frame will be (in TL)<div class='qna-

A square frame of side L is dipped in a liquid . On taking out , a membrane is formed . If the surface tension of the liquid is T , the force cating on the frame will be (in TL)

Option: 1 2

Option: 2 4

Option: 3 8

Option: 4 10

Answers (1)

best_answer

As we have learned

Surface Tension -

It is also defined as force per unit length

T= \frac{F}{l}

- wherein

F\rightarrow force

l\rightarrow imaginary \: length

 

 Force on each side = 2TL (due to two surfaces )

Force on the frame = 4 (2TL) 

                                  = 8TL 

 

Posted by

sudhir.kumar

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