Which colour of light has a higher critical ...

ICSE Class 10 Physics 2018 Paper

Question : 16 of 78

Marks: +1, -0

Which colour of light has a higher critical angel? Red light or Green light.

Solution:

We know that

\mu_{\text{Green }} > \mu_{\text{Red }}

Also,

i_c \propto \frac{1}{\mu}

\therefore

Red light has a higher critical angle.

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