CUET · PHYSICS · PYQ PAPER 2025
If the value of the refractive index of a denser medium with respect to the rarer medium is 1.414, then the critical angle is:
- A \( 30^{\circ} \)
- B \( 45^{\circ} \)
- C \( 60^{\circ} \)
- D \( 75^{\circ} \)
Answer & Solution
Correct Answer
(B) \( 45^{\circ} \)
Step-by-step Solution
Detailed explanation
\( \sin(\theta_c) = \frac{1}{n} \) \( \sin(\theta_c) = \frac{1}{1.414} \) \( \sin(\theta_c) \approx \frac{1}{\sqrt{2}} \) \( \theta_c = 45^{\circ} \)
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