A manometer connected to a closed tap re...

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

A

` 7 m s^(-1)`

B

`8ms ^(-1)`

C

` 9 ms ^(-1)`

D

` 12ms ^(-1)` j

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The correct Answer is:

D

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