Optics 4 Question 9

9. 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?

(2004,2M)

(a) PQ is horizontal

(b) QR is horizontal

(c) RS is horizontal

(d) Either PQ or RS is horizontal

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Solution:

  1. During minimum deviation the ray inside the prism is parallel to the base of the prism in case of an equilateral prism.


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