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The speed of a ball of radius 2 cm in a ...

The speed of a ball of radius 2 cm in a viscous liquid is 20 cm/s. Then the speed of ball of radius 1 cm in the same liquid is

A

`5cms^(-1)`

B

`10cms^(-1)`

C

`40cms^(-1)`

D

`80cms^(-1)`

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The correct Answer is:
A
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