Vikas TU
Last Activity: 4 Years ago
Mass of water rising in the tube of radius r is given by,
M=πr2hρNow,
Surface tension, σ=hρgr2=h'ρgr'2where h' is the height to which water rises in the second tube and r' its radius.
Since r'=2r, h'=h/2
Therefore, the mass of water in the second tube is given by,M'=πr'2h'ρ=π (2r)2h2ρ=2πr2hρ=2M