A lens made up of different material forms two images of a point object ${}^{\prime }{O}^{\prime }$ as shown in figure. Then

The correct option is A ${\mu }_1>{\mu }_2$

Let us assume that the refractive index of the upper part of the lens is ${\mu }_1$ and the lower part is made up of a material having a refractive index ${\mu }_2$. The more the refractive index more the light refracted, hence it can be observed that the light passing through ${\mu }_1$ is more refracted than the light passing through the refractive index ${\mu }_2$. Therefore it can be concluded that the refractive index of the upper part is more than the lower part of the lens. That means ${\mu }_1>{\mu }_2$ .