Question

A liquid is kept in a cylindrical vessel which is being rotated about a vertical axis through the centre of the circular base. If the radius of the vessel is r and angular velocity of rotation is ω, then the difference in the heights of the liquid at the centre of the vessel and the edge is

(a) rω/2g

(b) r²ω²/2g

(c) 2rωg

(d) ω²/2gr²

Answer 1

Correct option (b) r²ω²/2g

Explanation :

From Bernoulli's theorem,