Refraction, Glass Slab & Apparent Depth question from MHT CET 2024 (16 May, Shift 2)

Answer: (b)

1. Let the liquid surface be at depth $d$ above $p$. The mirror image of $p$ is $h$ below the mirror, i.e. at depth $d + 2h$.
2. Apparent depths: $p$ at $\frac{d}{\mu}$, image at $\frac{d + 2h}{\mu}$.
3. Apparent separation $= \frac{d + 2h}{\mu} - \frac{d}{\mu} = \frac{2h}{\mu}$
4. So the answer is (b) $\frac{2h}{\mu}$.