JEE PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

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Water flows through a horizontal pipe of radius '

r

' at a speed '

V

'. If the radius of the pipe is doubled, then the speed of flow of water under similar conditions is

View answer and explanation

Correct option: C

\frac{V}{4}

Option C (

\frac{V}{4}

) is correct because according to the equation of continuity, when the radius doubles, the area quadruples, and the velocity must decrease by a factor of 4 to maintain constant flow rate.

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