A wide slab consisting of two media of refractive indices n1 and n2 is placed in air as shown in the figure. A ray of light is incident from medium n 1 to n 2 at an angle θ, where sin θ is slightly larger than 1 / n 1. Take refractive index of air as 1 . Which of the following statement(s) is(are) correct?

Question

A wide slab consisting of two media of refractive indices n1 and n2 is placed in air as shown in the figure. A ray of light is incident from medium n 1 to n 2 at an angle θ, where sin θ is slightly larger than 1 / n 1. Take refractive index of air as 1 . Which of the following statement(s) is(are) correct? (A) The light ray enters air if n2=n1 (B) The light ray is finally reflected back into the medium of refractive index n 1 if n 2< n 1 (C) The light ray is finally reflected back into the medium of refractive index n1 if n2>n1 (D) The light ray is reflected back into the medium of refractive index n1 if n2=1

Tardigrade Admin · Accepted Answer

The ray diagram for the following conditions are

The light finally must reflected back in medium of refractive index n1 for all values of n2.

The light ray enters air if $n_{2} = n_{1}$

The light ray is finally reflected back into the medium of refractive index $n_{1}$ if $n_{2} < n_{1}$

The light ray is finally reflected back into the medium of refractive index $n_{1}$ if $n_{2} > n_{1}$

The light ray is reflected back into the medium of refractive index $n_{1}$ if $n_{2} = 1$

The ray diagram for the following conditions are

The light finally must reflected back in medium of refractive index $n_{1}$ for all values of $n_{2}$ .

The light ray enters air if n2​=n1​

The light ray is finally reflected back into the medium of refractive index n1​ if n2​<n1​

The light ray is finally reflected back into the medium of refractive index n1​ if n2​>n1​

The light ray is reflected back into the medium of refractive index n1​ if n2​=1

The ray diagram for the following conditions are The light finally must reflected back in medium of refractive index n1​ for all values of n2​.

The light ray enters air if $n_{2} = n_{1}$

The light ray is finally reflected back into the medium of refractive index $n_{1}$ if $n_{2} < n_{1}$

The light ray is finally reflected back into the medium of refractive index $n_{1}$ if $n_{2} > n_{1}$

The light ray is reflected back into the medium of refractive index $n_{1}$ if $n_{2} = 1$

The ray diagram for the following conditions are

The light finally must reflected back in medium of refractive index $n_{1}$ for all values of $n_{2}$ .