The rise in a capillary = 2S.cosθ/rρg
Here S = 7.5x10⁻² N/m, ρ = 1000 kg/m², Let g = 10 m/s²,
For water θ = 0°.
Hence for A, r = 0.5 mm =0.0005 m
Rise = 2* 7.5x10⁻²*cos0°/(0.0005*1000*10)
=15/500 m
=3/100 m
=3 cm
For B, r = 1.0 mm =0.001 m
Rise = 2* 7.5x10⁻²*cos0°/(0.001*1000*10) =
15/1000 m
=15*100/1000 cm
=1.5 cm
For C, r = 1.5 mm =0.0015 m
Rise = 2* 7.5x10⁻²*cos0°/(0.0015*1000*10)
=15/1500 m
=1/100 m
=1.0 cm