Optics Question 980
Question: The refractive index of water is 1.33. The direction in which a man under water should look to see the setting sun is
[MP PET 1991; Kerala PET 2002; Pb. PET 2003]
Options:
A) $ 49^{o} $ to the horizontal
B) $ 90^{o} $ with the vertical
C) $ 49^{o} $ to the vertical
D) Along the horizontal
Show Answer
Answer:
Correct Answer: C
Solution:
Ray from setting sum will be refracted at angle equal to critical angle.
