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An ideal flui...

Question

An ideal fluid flows steadily in a pipe of varying cross-section. When the radius of pipe is 3R then velocity of fluid at that point is υ. What is the velocity of fluid at a point where its radius is R?

A

∪/3

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B

∪/9

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C

9∪

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D

3∪

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Solution

The correct option is C
9∪

$A_{1} \cup_{1} = A_{2} \cup_{2}; π (3 R)^{2} \cup = π R^{2 +} \cup_{2} \Rightarrow \cup_{2} = 9 \cup$

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