4. There is a circular tube in a vertical plane. Two liquids which do not mix and of densities d1 and d2 are filled in the tube. Each liquid subtends 90 ° angle at centre. Radius joining their interface makes an angle α with vertical. Ratio d 1 d 2 is Share with your friends Share 8 Vijay Shankar Yadav answered this Dear Student, The concept is that :The pressure at the interface must be same from both the sides to be equillibrium:d1gR(cosα -sinα) = d2gR(cosα +sinα)therefore :d1d2 = 1+tanα1-tanα Regard -14 View Full Answer