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in Physics by (46.4k points)

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 d1/d2 is

(a) 1 + sin α/1- sin α

(b) 1 + cos α/1 - cos α

(c) 1 + tan α/1 - tan α

(d) 1 + sin α/1 - cos α

1 Answer

+1 vote
by (64.1k points)
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Best answer

Correct Option (c) 1 + tan α/1 - tan α

Explanation: 

Equating pressure at A, we get

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