Figure shows a mixture of blue-green and red coloured rays, incident normally on a right-angled prism. The critical angles of the materials of the prism for red, green and blue are ${46}^{\mathrm{o}}$, ${44}^{\mathrm{o}}$ and ${43}^{\mathrm{o}}$ Respectively. The arrangement will separate-

Three rays of light, namely red $\left(R\right)$, green $\left(G\right)$ and blue $\left(B\right)$ are incident on the face $PQ$ of a right angled prism $PQR$ as shown in figure.

The refractive indices of the material of the prism for red, green and blue wavelength are $1.27,1.42$ and $1.49$ respectively. The colour of the ray(s) emerging out of the face $PR$ is :

Show, with the help of ray diagrams, how an image is produced in a totally-reflecting prism.

Show, by ray-diagram, how a totally reflecting glass prism can be used to deviate a ray through $180°$.

A light ray is incident perpendicularly to one face of a ${90}^{\mathrm{o}}$ Prism and is totally internally reflected at the glass-air interface. If the angle of reflection is ${45}^{\mathrm{o}}$, we conclude that the refractive index $\mathrm{\mu }$.

Draw ray diagram to deviate a ray of light by $90°$, $180°$ and inversion without deviation. Name the phenomenon used and write its conditions.

A ray falls on a prism $ABC\left(AB=BC\right)$ and travels as shown in figure. The minimum refractive index of the prism material should be

A beam of light consisting of red, green and blue colours is incident on a right-angled prism. The refractive index of the material of a prism for red, green and blue wavelengths are $1:39$, $1.44$ and $1.47$ Respectively. The prism will____

Two parallel light rays are incident at one surface of a prism as shown in the figure. The prism is made of glass of refractive index $1.5$. The angle between the rays as they emerge is nearly.

The refractive index of the material of an equilateral prism is $\sqrt{3}$. What is the angle of minimum deviation $\delta$.

Show, by a ray-diagram, how a totally reflecting glass prism can be used to deviate a ray through $90°$.

In the given figure, the principal section of a glass prism is an isosceles triangle$\mathrm{ABC}$ with $AB=AC$ . The face $AC$ is silvered. A ray incident normally on face $AB\text{,}$ after two reflections emerges from the base$\mathrm{BC}$ in a direction perpendicular to it. What is the angle$\angle BAC$ of a prism?

The refractive index of the material of the prism and liquid are $1.56$ and $1.32$, respectively. What will be the value of $\theta$ for the following refraction?