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 -

$μ_1$ $μ_2$ $μ_3$ $μ_1=μ_2=μ_3$

$μ_2$

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