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If The Refractive Index Of Crown Glass Is 1.51; Its Critical Angel Is? - Erudites Academy
Physics JAMB

If the refractive index of crown glass is 1.51; its critical angel is?
If the refractive index of crown glass is 1.51; its critical angel is?If the refractive index of crown glass is 1.51; its critical angel is?

A. 48.6°
B. 22.5°
C. 41.5°
D. 45.0°

Correct Answer:

Option C = 41.5°

Explanation

SinC = (1)/n
= (1)/1.51 = 0.6622
∴ C = sin +0.6622 = 41.47

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