Question

Figure shows three transparent media of refractive indices ${\mu }_1,{\mu }_2$ and ${\mu }_3$. A point object O is placed in the medium ${\mu }_2$. If the entire medium on the right of the spherical surface has refractive index ${\mu }_1$, the image forms at O'. If this entire medium has refractive index ${\mu }_3$, the image forms at O". In the situation shown,

• A. the image forms between O' and O"
• B. the image forms to the left of O'
• C. the image forms to the right of O"
• D. two images form, one at O' and the other at O".

Answer 1

The correct option is D two images form, one at O' and the other at O".

The rays incident on the surface above the principal axis will be refracted in the medium of R.I. µ₃ and form the image at O". But the rays falling below the axis will be refracted in the medium having R.I. µ₁ and the image will be formed at O'. Hence two images will be formed.

Hence option C is correct.