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 w

Question

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 w

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

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - 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

4 views Answered 2023-02-05 15:29