CBSE Class 12 Physics 2023 Outside Delhi Set 2 Paper

Question : 8 of 13

Marks: +1, -0

A ray of light of wavelength

600 {\nm}

propagates from air into a medium. If its wavelength in the medium becomes

400 {\nm}

, the refractive index of the medium is

Solution:

\;\; λ_{\;\text "medium "\;}=λ_{\;\text "air "\;} \/ µ

Or,

400\;=\;{600}/{µ}

∴\ µ\;=\;{600}/{400}=1.5

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