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Water is moving with a speed of 5.18 ms^...

Water is moving with a speed of `5.18 ms^(-1)` through a pipe with a cross-sectional area of `4.20 cm^(2)`. The water gradually descends 9.66 m as the cross-sectional area of pipe is increased to `7.60 cm^(2)`. The speed of the flow of water at lower level is

A

`3.0 ms^(-1)`

B

`5.7 ms^(-1)`

C

`3.82 ms^(-1)`

D

`2.86 ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
`a_(1)v_(1)=a_(2)v_(2)`
`rArr 4.20xx5.18=7.60 xxv_(2)rArr 2.86 m//s`
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