Optics Question 736
Question: Light of wavelength is $ 7200{AA} $ in air. It has a wavelength in glass ( $ \mu =1.5 $ ) equal to
[DCE 1999]
Options:
A) $ 7200{AA} $
B) $ 4800{AA} $
C) $ 10800{AA} $
D) $ 7201.5{AA} $
Show Answer
Answer:
Correct Answer: B
Solution:
$ {\lambda _{glass}}=\frac{{\lambda _{air}}}{\mu }=\frac{7200}{1.5}=4800{AA} $
