Optics Question 976
Question: The velocity of light in a medium is half its velocity in air. If ray of light emerges from such a medium into air, the angle of incidence, at which it will be totally internally reflected, is
[Roorkee 1999]
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: B
Solution:
also for total internal reflection
Hence
