For a prism of prism angle \( \theta = 60^\circ \), the refractive indices of the left half and the right half are, respectively, \( n_{1} \) and \( n_{2} \) \( (n_{2} \ge n_{1}) \), as shown in the figure. The angle of incidence \( i \) is chosen such that the incident light rays will have minimum deviation in \( n_{1} = n_{2} = n = 1.5 \). For the case of unequal refractive indices, \( n_{1} = n \) and \( n_{2} = n + \Delta n \) (where \( \Delta n \ll n \)) the angle of emergence \( e = i + \Delta e \). Which of the following statement(s) is (are) correct?
