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Spherical balls of radius 'R' are fallin...

Spherical balls of radius 'R' are falling in a viscous fluid of viscosity `'eta'` with a velocity 'v'. The retarding viscous force acting on the spherical ball is

A

directly proportional to R but inversely propotional to

B

Directly proportional to both radius R and velocity v

C

inversely propotional to both radius R and velocity v

D

inversely propotional to R but directly propotional to velocity v

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The correct Answer is:
B
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ALLEN-ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 5 A (Previous year Questions)
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