Optics Question 772

Question: The refractive indices of water and glass with respect to air are 1.2 and 1.5 respectively. The refractive index of glass with respect to water is

[Pb. PET 2002]

Options:

A) 0.6

B) 0.8

C) 1.25

D) 1.75

Show Answer

Answer:

Correct Answer: C

Solution:

$ _{w}{\mu _{g}}=\frac{ _{a}{\mu _{g}}}{ _{a}{\mu _{w}}} $

$ =\frac{1.5}{1.2}=\frac{5}{4}=1.25 $ .



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