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प्रश्न
The critical angle for diamond is about ______.
विकल्प
42°
30°
24°
10°
MCQ
रिक्त स्थान भरें
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उत्तर
The critical angle for diamond is about 24°.
Explanation:
The refractive index of diamond is approximately 2.42, which corresponds to a critical angle of about 24° ($$\sin C = \frac{1}{2.42} \approx 0.413 \implies C \approx 24^\circ$$).
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