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Physics - Fluid Question with Solution | TestHub

PhysicsFluidSurface TensionEasy2 minPYQ_2020

PhysicsEasysingle choice

A mosquito with $8$ legs stands on water surface and each leg makes depression of radius $a$ . If the surface tension and angle of contact are $T$ and zero respectively ,then the weight of mosquito is

Options:

Answer:

Solution:

Figure shows one of the legs of the mosquito landing upon the water surface.

Therefore, $T . 2 π a \times 8 = W =$ weight of the mosquito.

$T . 16 π a = W$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:FluidSubtopic:Surface Tension

⏱ 2mℹ️ Source: PYQ_2020

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