alleryThe critical angle of diamond is about:
A54.41
B24.41
C34.41
D44.41
Answer & Solution
Correct answer: B. 24.41
1. Diamond has a high refractive index of 2.42.
2. Its critical angle with respect to air is 24.41 degrees.
3. The small critical angle is what makes diamond sparkle.
_Source: syllabus Physics Part II, Ch 9 'Ray Optics and Optical Instruments'_
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