The critical angle of a substance becomes smaller when the substance is:
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Correct Answer: Option C
Explanation:
A more optically dense material has a higher refractive index. Such materials bend light more strongly and usually have smaller critical angles. Diamond is a good example because its high refractive index gives it a very small critical angle.
A more optically dense material has a higher refractive index. Such materials bend light more strongly and usually have smaller critical angles. Diamond is a good example because its high refractive index gives it a very small critical angle.