1.

, Define angle of minimum deviation. For a prism of angle A = 60 , the angle ofminimum deviation is 30o. Calculate its refractįve index of the material of theprism.RA

Answer»

A ray of light is deflected twice in a prism. The sum of these deflections is thedeviation angle. When the entrance and exitanglesare equal, thedeviation angleof a ray passing through a prism will be aminimum.



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