Optics Question 735
Question: Monochromatic light of frequency $ 5\times 10^{14} $ Hz travelling in vacuum enters a medium of refractive index 1.5. Its wavelength in the medium is
[MP PET/ PMT 1995; Pb. PET 2003]
Options:
A) $ 4000{AA} $
B) $ 5000{AA} $
C) $ 6000{AA} $
D) $ 5500{AA} $
Show Answer
Answer:
Correct Answer: A
Solution:
$ {\lambda _{m}}=\frac{{\lambda _{a}}}{\mu }=\frac{c}{\nu \mu }=\frac{3\times 10^{8}}{5\times 10^{14}\times 1.5}=4000{AA} $
