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} $



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