The angle of deviation is `60^@` for an equiangular prism. Calculate
the refractive index of the material of a prism

The angle of deviation is 60^@ for an equiangular prism. Calculate the angle of refraction.

The angle of deviation is 60^@ for an equiangular prism. Calculate the angle of incidence

Light from sodium lamp passes through a 60^@ prism. The angle of minimum deviation is also 60^@ . Find the refractive index of the material of the prism for the yellow light.