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A square wire frame of L is dipped in a ...

A square wire frame of L is dipped in a liquid, on taking out a membrane is formed. If the surface tension of liquid is T, force acting on the frame will be

A

2 TL

B

4 TL

C

8 TL

D

10 TL

Text Solution

Verified by Experts

The correct Answer is:
C
Membrane has two free surfaces
Therefore total force acting on frame
` = S.T xx "boundary of frame " xx 2`
` T xx 4L xx 2 = 8 ` TL
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NIKITA PUBLICATION-SURFACE TENSION-Multiple Choice Questions (Capillarity and capillary action )
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  11. A capillary tube when immersed vertically into a liquid records a rise...

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  14. A soap film of surface tension 3 xx 10^(-2)N//m formed in a rectangula...

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  16. Water rises to height of 5 cm in glass capillary tube . If the area of...

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