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Water is flowing in a river. If the velo...

Water is flowing in a river. If the velocity of a layer at a distance of 10 cm from the bottom is `20(cm)/(s)`. Find the velocity of layer at a height of `40cm` from the bottom

A

`10(cm)/(s)`

B

`20(cm)/(s)`

C

`30(cm)/(s)`

D

`80(cm)/(s)`

Text Solution

Verified by Experts

The correct Answer is:
A
`F=-etaA(dv)/(dx),Falpha(dv)/(dx) or Falpha(Deltav)/(Deltax)`
`Falpha(v)/(x)(or)xalpha(v)/(F)`
But F is constant `:. xalphav`
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