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Three immiscibles transparent liquids with erefractive indices 3/2,4/3 and 6/5 are arranged one on top of another. The depth of the liquid are 3 cm, 4 cm and 6 cm respectively. The apparent depth of the vessel is
A. 10 cm
B. 9 cm
C. 8 cm
D. 7 cm

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Correct Answer - A
(a) As, `d_(app)=d_(1)/(µ_(1))+d_(2)/(µ_(2))+d_(3)/(µ_(3))=3/(3//2)+4/(4//3)+6/(6//5)`
=2+3+5=10 cm

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