Q.

The tangential velocity of the water element having a free vortex is

A. Directly proportional to its distance from the centre
B. Inversely proportional to its distance from the centre
C. Directly proportional to its (distance) 2 from the centre
D. Inversely proportional to its (distance) 2 from the centre
Answer» B. Inversely proportional to its distance from the centre
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