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An ideal fluid flows through a pipe of c...

An ideal fluid flows through a pipe of circular cross-section made of two sections with diameters `2.5 cm` and `3.75 cm`. The ratio of the velocities in the two pipes is

A

`9 : 4`

B

`3 : 2`

C

`3 : 2`

D

`2 : 3`

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The correct Answer is:
A
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