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Bernoulli's Principle

An ideal liqu...

Question

An ideal liquid flows through a horizontal tube of variable diameter. The pressure is lowest where the ________.

velocity is lowest

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velocity is highest

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diameter is largest

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None of the above

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Solution

The correct option is A velocity is highest
By Bernoulli's equation, for a horizontal tube, Pressure decreases as velocity of fluid increases.

So pressure is lowest, when the fluid-velocity is highest.

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