Consider a convex surface separating two media of refractive indices n1 and n2 respectively, n2n1. Which of these is a correct diagram?

Question

Consider a convex surface separating two media of refractive indices n1 and n2 respectively, n2>n1. Which of these is a correct diagram? (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Figure shows the geometry of formation of image

I

of an object

O

on the principal axis of a spherical surface with centre of curvature

C

and radius of curvature

R

. The rays are incident from a medium of refractive index

n_{1}

, to another of refractive index

n_{2}

.

As before, we take the aperture (or the lateral size) of the surface to be small compared to other distances involved, so that small angle approximation can be made.

Q. Consider a convex surface separating two media of refractive indices n1​ and n2​ respectively, n2​>n1​. Which of these is a correct diagram?

Q. Consider a convex surface separating two media of refractive indices $n_{1}$ and $n_{2}$ respectively, $n_{2} > n_{1}$ . Which of these is a correct diagram?