11. Two communicating vessels contain mercury. The diameter of one vessel is n times larger than the diameter of the other. A column of water of height h is poured into the left vessel. The mercury level will rise in the right-hand vessel (s = relative density of mercury and ρ= density of water) by
(a) (n2h)/[(n+1)2s] (b) h/[(n+1)2s]
(c) h/[(n2 +1)s] (d) h/(n2 s)
Answer-b
(35)