Question
Question: A ray of light is incident on a face of equilateral triangular prism at an incident angle 40°. At th...
A ray of light is incident on a face of equilateral triangular prism at an incident angle 40°. At this angle, minimum deviation occurs. The value of this deviation is –
A
600
B
100
C
200
D
400
Answer
200
Explanation
Solution
At dmin
i = e
dmin = i + e – A
= 40 + 40 – 60
= 200