JEE-2015

There is a circular tube in a vertical plane. Two liquids which do not mix and of densities d1d_1 and d2d_2 are filled in the tube. Each liquid subtends 9090^\circ angle at centre. Radius joining their interface makes an angle α \alpha with vertical. Ratio d1d2 \frac {d_1}{d_2 } is:

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