Q. Two immiscible liquids of refractive indices 1.5 and $\frac{4}{3}$ are filled in glass jar each of length 6 cm. A light of source $S\ $is at the bottom of the jar, the apparent depth of light source will be

A) 12.5 cm
B) 17 cm
C) 12 cm
D) 8.5 cm
Explanation

(a) Apparent depth is given by
$d_{apparent} = \frac{d_{1}}{\mu_{1}} + \frac{d_{2}}{\mu_{2}}$
$= \frac{6}{4/3} + \frac{6}{1.5} = 4.5 + 4$
$= 8.5\ cm$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.