AP EAMCET · PHYSICS · Ray Optics
With respect to air, the critical angle in a medium for red light of wave length \(\lambda_1\) is \(\theta\). Other facts remaining same, critical angle for yellow light of wave length \(\lambda_2\) will be
- A \(\theta\)
- B more than \(\theta\)
- C less than \(\theta\)
- D \(\frac{\theta \lambda_1}{\lambda_2}\)
Answer & Solution
Correct Answer
(C) less than \(\theta\)
Step-by-step Solution
Detailed explanation
Critical angle \(=\sin ^{-1}\left(\frac{1}{\mathrm{n}}\right)=\sin ^{-1}\left(\frac{\mathrm{v}}{\mathrm{c}}\right)\) Critical angle \(=\sin ^{-1}\left(\frac{\mathrm{f} \lambda}{\mathrm{c}}\right) \quad\left(\because \mathrm{v}=\frac{\mathrm{c}}{\mathrm{n}}\right)\) for red…
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