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Water is following in a river. If the ve...

Water is following in a river. If the velocity of a layer at a distance 10 cm from the bottom is 20n cm/s. Find the velocity of layer at a height of 40 cm from the bottom.

A

10 m/s

B

20 m/s

C

30 m/s

D

80 m/s

Text Solution

Verified by Experts

`:. F=-etaA(dv)/(dx)`
`:. " " xpropv`
`(v_(2))/(v_(1))=(x_(2))/(x_(1))or (v_(2))/(20) =(40)/(10)`
`v_(2)=80 cm//s`
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