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A spherical ball of radius $1\times 10^{-4}m$ and of density $10^{4}\frac{kg}{m^{3}}$ falls freely under gravity through a distance 'h' before entering a tank of water , the velocity of ball doesn't change , then find 'h'. The coeffecient of VISCOSITY of water is $9.8\times 10^{-6} Pa s$

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Answer 1

Refer to the attachment!!