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The velocity of water in a river is 18 k...

The velocity of water in a river is 18 kmph near the surface. If the river is 4 m deep, the shearing stress between horizontal layers of water in `Nm^(-2)` is `(eta_("water")=1xx10^(-3)pa.s)`

A

`2.5xx10^(-3)`

B

`1.25xx10^(-3)`

C

`0.75xx10^(-3)`

D

0

Text Solution

Verified by Experts

The correct Answer is:
B
`(F)/(A)=eta(dv)/(dx)`
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