Path of a ray of light passing thorugh three liquids of refraction indices, $μ_1, μ_2, μ_3$, is shown below. The liquid which has smallest index of refraction is -

$μ_2$

The correct answer is Option (2) - $μ_2$

When light entered the medium $μ_1$ it get lightly bend outwards of $μ_2$

$⇒μ_2<μ_1$

$⇒μ_3<μ_1$

∴ Smallest index is $μ_2$.