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
$d_{apparent} = \frac{d_{1}}{\mu_{1}} + \frac{d_{2}}{\mu_{2}}$
$= \frac{6}{4/3} + \frac{6}{1.5} = 4.5 + 4$
$= 8.5\ cm$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.