Two co axial glass tubes forming an annulus with small gap

Last updated: 6/10/2023

Two co axial glass tubes forming an annulus with small gap are immersed in clean water The inner and outer radii of the annulus are r and ro respectively What is the capillary rise of water in the annulus if o is the surface tension of water is constant with air p is the density of water and g acceleration due to gravity a b c 20 pg ro r 40 pg ro ri d 80 pg ro r O pg ro r