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Q. In a vessel two insoluble liquids are filled as shown in the figure. The effective refractive index of the combination for normal view isPhysics Question Image

Ray Optics and Optical Instruments

Solution:

$d _{ APP }=\frac{ d _{1}}{\mu_{1}}+\frac{ d _{2}}{\mu_{2}}$
$=\frac{ d + d _{2}}{ v _{ eff}}$
$\Rightarrow v_{eff}=\frac{d_{1}+d_{2}}{\frac{d_{1}}{\mu_{1}}+\frac{d_{2}}{\mu_{2}}}$