Water rises to a height of 20 mm in a capillary . If the radius of the capillary is made `(1)/(3)` rd of its previous is made then what is the new value of the capillary rise ?

Explanation

`{:(" "hprop(1)/(R)," "h.=h(R)/(R.)=((R)/((R)/(3)))),(therefore(h)/(h)=(R)/(R)," " h.=3h):}`
`=3(20)=60mm`