Q 12-09-122JEE MainJEE Main 2023 (13 Apr, Shift 1)Medium
A vessel of depth $d$ is half filled with oil of refractive index $n_1$ and the other half is filled with water of refractive index $n_2$. The apparent depth of this vessel when viewed from above will be
Answer: (B) $\dfrac{d(n_1+n_2)}{2n_1n_2}$
$$d_{app}=\frac{d/2}{n_1}+\frac{d/2}{n_2}=\frac{d(n_1+n_2)}{2n_1n_2}$$
Solution by Sreeraj P, M.Sc Physics