Q: 75 (NDA-I/2010)

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A ray of light falls on a transparent glass plate. A part of it is reflected and a part is refracted. The reflected and refracted rays can be perpendicular to each other for
question_subject: 
Maths
question_year: 
2010
question_exam: 
NDA-I
stats: 
0,48,264,112,88,64,48