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
A
PQ is horizontal 
B
QR is horizontal
C
RS is horizontal
D
Either PQ or RS is horizontal
Text Solution
Verified by ExpertsThe correct answer is:
B
In minimum deviation position refracted ray inside the prism is parallel to the base of the prism.
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