Optics Question 705
Question: The refractive index of a certain glass is 1.5 for light whose wavelength in vacuum is $ 6000{AA} $ . The wavelength of this light when it passes through glass is
[NCERT 1979; CBSE PMT 1993; MP PET 1985, 89]
Options:
A) $ 4000{AA} $
B) $ 6000{AA} $
C) $ 9000{AA} $
D) $ 15000{AA} $
Show Answer
Answer:
Correct Answer: A
Solution:
$ {\lambda _{medium}}=\frac{{\lambda _{air}}}{\mu }=\frac{6000}{1.5}=4000\ {AA} $
