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JEE PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

1 Medium

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Application +4 | -1

A circular frame of wire having radius

r

is floating on the surface of a liquid having surface tension

\sigma

. The additional force other than its weight, required to pull out the frame from the liquid is

View answer and explanation

Correct option: C

\sigma \cdot 4 \pi r

Option C (

\sigma \cdot 4 \pi r

) is correct because the force due to surface tension acts along the inner and outer circumference of the ring.

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