When a stopper is pulled from a filled wash basin, the water drains out while circulating like a small whirl pool. The angular velocity of a fluid element about a vetical axis through the orifice appears to be greater near the orifice. The angular velocity of fluid element varies

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inversely as the square of its distance from the axis through the orifice.

inversely as the distance from the axis through the orifice.

directly as the square of its distance from the axis through the orifice

directly as the distance from the axis through the orifice

answer is A.

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Detailed Solution

law of conservation of angular momentum

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