ICSE Class 10 Physics 2018 Solved Paper

Question : 15 of 78

Marks: +1, -0

State the relation between the critical angle and the absolute refractive index of a'medium.

Solution:

The relation is

µ_{\;\text "medium "\;}=\;{1}/{ sin \;i_c}={\cosec} i_c

where

µ_{\;\text "medium "\;}

is the absolute refractive index of the medium and

i_c

is the critical angle for the medium.

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