Optics Question 451
Question: A light ray is incident by grazing one of the face of a prism and after refraction ray does not emerge out, what should be the angle of prism while critical angle is C?
Options:
A) Equal to 2C
B) Less than 1C
C) More than 2C
D) None of the above
Show Answer
Answer:
Correct Answer: C
Solution:
[c] From ray diagram $ A-C+\theta $ For TIR at AC $ \theta >C $ So A>2C
