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Two small spheres of radii r and 2r fall...

Two small spheres of radii r and 2r fall through a viscous liquid with the same constant speed. The viscous forces experienced by them are in the ratio ………….. .

A

`1 : 2`

B

`2 : 1`

C

`1 : 4`

D

`4 : 1`

Text Solution

Verified by Experts

The correct Answer is:
A
`F = 6 pi eta a v , (F_1)/(F_2) = (r_1)/(r_2) = r/(2r) = 1/2`
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FULL MARKS-PROPERTIES OF MATTER-Additional Questions Solved - Choose the Correct Answers
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