Question

What is minimum deviation in the prism.Pls explain in simple words!!

Answer 1

When the entrance and exit angles are equal, the deviation angle of a ray passing through a prism will be a minimum.As a ray of light enters thetransparentmaterial, the ray's direction is deflected, based on both the entrance angle (typically measured relative to the perpendicular to the surface) and the material'srefractive index, and according toSnell's Law. A beam passing through an object like aprismorwater dropis deflected twice: once entering, and again when exiting. The sum of these twodeflections is called the deviation angle.