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Water form a pipe is coming at a rate of...

Water form a pipe is coming at a rate of 100 liters per minute. If the radius of the pipe is 5 cm, the Reynolds number for the flo0w is : (density of water `=1000kg//m^(3)`, coefficient of viscosity of water =1mPas)

A

`10^(6)`

B

`10^(4)`

C

`10^(3)`

D

`10^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Rate of volume flow ` = pi r^(2) v = 100` l/min
` pi r^(2) v = (1)/( 600) m^(3) // s `
Reynolds number = `R_(e) = ( rho v D)/( eta) = (100)/(0.1) xx (1)/( 600 pi r^(2)) xx 2r`
`= 3 . 5 xx 10 ^(4)`
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