1.

A long cylindrical vessel is half-filled with a liquid. When the vessel is rotated about its own vertical axis, the liquid rises up near the wall. If the radius of vessel is 5cm and its rotational speed is 2 rotations per second, then the difference in the heights between the centre and the sides (in cm) will be

A. 0.1
B. 1.2
C. 0.4
D. 2
Answer» E.


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