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Q.

A metallic cube of mass ‘m’ is suspended by a string. Area of each face is ‘A’. If p be the hydrostatic pressure on the bottom face of the cube, then

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a

then tension in the string is mg

b

buoyant force acting on the cube is pA.

c

buoyant force acting on the cube is less than pA.

d

buoyant force acting on the cube is (T-pA) where T is the tension in the string.

answer is B.

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Detailed Solution

Buoyant force = Net hydrostatic upthrust acting on the cube = pA.

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