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A manometer connected to a closed tap re...

A manometer connected to a closed tap reads `4.5 xx 10^(5)` pascal. When the tap is opened the reading of the manometer falls is `4 xx 10^(5)` pascal. Then the velocity of flow of water is

A

7 m`s^(-1)`

B

8 m`s^(-1)`

C

9 m`s^(-1)`

D

10 m`s^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
For manometer
`(p_1-p_2)/(rho g)=(v^2)/(2g)`
`implies (0.5 xx 10^5)/(10^3)=(v^2)/(2) implies v = 10 m//s`.
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