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Two capillaries of length L and 2L and o...

Two capillaries of length L and 2L and of radii R and 2R are connected in series. The net rate of flow of fluid through them will be (given rate of flow through single capillary `x=(pi PR^(4))/(8eta^(2))`).

A

`(8)/(9)x`

B

`(9)/(8)x`

C

`(5)/(7)x`

D

`(7)/(5)x`.

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The correct Answer is:
A
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