Geometrical Optics

For a prism of prism angle \(\theta\) = 60\(^\circ\), the refractive indices of the left half and the right half are, respectively, n₁ and n₂ (n₂ \(\ge\) n₁) as shown in the figure. The angle of incidence i is chosen such that the incident light rays will have minimum deviation if n₁ = n₂ = n = 1.5. For the case of unequal refractive indices, n₁ = n and n₂ = n + \(\Delta\)n (where \(\Delta\)n << n), the angle of emergence e = i + \(\Delta\)e. Which of the following statement(s) is(are) correct?