Two transparent media A and B are separated by a plane boundary. The speed of light in…
Physics · JEE Main · NTA Exams — Optics
Two transparent media A and B are separated by a plane boundary. The speed of light in medium A is \(2.0 \times 10^{8} \mathrm{~m} \mathrm{~s}^{-1}\) and in medium B is \(2.5 \times 10^{8} \mathrm{~ms}^{-1}\). The critical angle for which a ray of light going from A to B is totally internally reflected is
- \(\sin ^{-1}\left(\frac{1}{2}\right)\)
- \(\sin ^{-1}\left(\frac{2}{5}\right)\)
- \(\sin ^{-1}\left(\frac{4}{5}\right)\)
- \(\sin ^{-1}\left(\frac{1}{3}\right)\)
Answer
(C) ^ -1 ( 4 5 )
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