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Physics · 2025 · 1 mark
CBSE 2025 · Region 1 · Set 2 · Q8
The speed of light in two media' 1 'and' 2 'are v_1 and v_2(>v_1) respectively. For a ray of light to undergo total internal reflection at the…
The speed of light in two media' $\displaystyle 1$ 'and' $\displaystyle 2$ 'are $\displaystyle v_{1}$ and $\displaystyle v_{2}\left(>v_{1}\right)$ respectively. For a ray of light to undergo total internal reflection at the interface of these two media, it must be incident from
Official answer
(A)
medium' $\displaystyle 1$ 'and at an angle greater than $\displaystyle \sin ^{-1}\left(\frac{v_{1}}{v_{2}}\right)$
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