Optics Question 735

Question: Monochromatic light of frequency 5×1014 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) 4000AA

B) 5000AA

C) 6000AA

D) 5500AA

Show Answer

Answer:

Correct Answer: A

Solution:

λm=λaμ=cνμ=3×1085×1014×1.5=4000AA

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