The velocity through a channel of circular section will be maximum when the depth of water is
__________ the diameter of the circular channel.
(A) 0.34 times
(B) 0.67 times
(C) 0.81 times
(D) 0.95 times
__________ the diameter of the circular channel.
(A) 0.34 times
(B) 0.67 times
(C) 0.81 times
(D) 0.95 times