MHTCET 2016 Physics Solved Paper

In a capillary tube of radius R, a straight thin metal wire of radius r (R> r) is inserted symmetrically and one end of the combination is dipped vertically in water such that the lower end o f the combination is at same level. The rise of water in the capillary tube is
[T = surface tension of water, ρ = density of water and g = gravitational acceleration]