Prism Questions

For the angle of minimum deviation of a prism to be equal to its refracting angle ($A$), the prism must be made of a material whose refractive index ($\mu$):

A ray of light is incident at an angle $i$ on one face of a prism of angle $A$ (small) and emerges normally from the opposite face. If the refractive index is $\mu$, the angle $i$ is nearly equal to:

The angle of a prism is 'A'. One of its refracting surfaces is silvered. Light rays falling at an angle of incidence $2A$ on the first surface returns back through the same path after suffering reflection at the silvered surface. The refractive index $\mu$, of the prism is:

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 the prism for the above red, green and blue wavelengths are $1.39,1.44$ and $1.47$ respectively. The prism will:

The angle of incidence for a ray of light at a refracting surface of a prism is $45^{\circ }$. The angle of prism is $60^{\circ }$. If the ray suffers minimum deviation through the prism, the angle of minimum deviation and refractive index of the material of the prism respectively, are: