Physics-
General
Easy

Question

A ray of light is incident on an equilateral glass prism placed on a horizontal table. For minimum deviation which of the following is true

  1. PQ is horizontal    
  2. QR is horizontal    
  3. RS is horizontal    
  4. Either PQ or RS is horizontal.    

The correct answer is: QR is horizontal


    In minimum deviation position refracted ray inside the prism is parallel to the base of the prism

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