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PhysicsFluidSurface TensionMedium2 minPYQ_2010

PhysicsMediumsingle choice

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

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Answer:

Solution:

Since, the wire frame is dipped in liquid, therefore its membrane has two free surfaces. Total length of square wire frame in contact of membrane $= 2 \times$ perimeter of square $= 2 \times 4 L = 8 L$ Hence, force acting on a frame $F = Tl = T \times 8 L = 8 T L$

Stream:JIPMERSubject:PhysicsTopic:FluidSubtopic:Surface Tension

⏱ 2mℹ️ Source: PYQ_2010

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