The diameter of the vertical tubes of a U-tube are 10 mm and 4mm. The tubes are filled with water. What wil be the difference of heights of water coloumns in the tubes? (angle of contact theta=0^(@))

The diameter of the vertical tubes of a U-tube are 10 mm and 4mm. The

1.	The diameter of the vertical tubes of a U-tube are 10 mm and 4mm. The tubes are filled with water. What wil be the difference of heights of water coloumns in the tubes? (angle of contact theta=0^(@))
Answer» Solution :Given `d_(1)=10mm, r_(1)=5MM, d_(2)=4mm, r_(2)=2mm` `Deltah=h_(2)-h_(1)` `=(2T cos THETA)/(rhog) [(1)/(r_(2))-(1)/(r_(1))]=(2 xx 0.072 xx 1)/(10^(3) xx 9.8 xx 10^(-3)) [1/2-1/5]=0.01469 xx ((5-2)/(10))` `Deltah=4.4 xx 10^(-3)m` This difference of HEIGHTS of WATER columns in the tubes.