If the refracting angle of a prism is 60∘ and minimum deviation 30∘, the angle of incidence will be:
A prism of refractive index and refractive angle A produces minimum deviation δm of a ray on one face at an angle of incidence 450. The values of A and δm are respectively
The refractive index of a prism for a monochromatic wave isand its refracting angle is 600. For minimum deviation, the angle of incidence will be