Refraction Through a Prism

A Glass prism of angle of prism $72°.$ is placed in water. Calculate the value of minimum deviation produced by prism for parallel incident ray.

${\mu }_g=1.66, {\mu }_w=1.33$

What is dispersive power? Find the necessary conditions for obtaining deviation without dispersion by two thin prisms.

Deviation of a thin prism of refractive index $n$ and angle of prism $A$ is-

Which of the following phenomenon takes place when a monochromatic light is incident on a prism?