Physics
JAMB 2009
If the refractive index of crown glass is 1.51, its critical angle is?
-
A.
48.6°
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B.
22.5°
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C.
41.5°
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D.
45.0°
Correct Answer: Option C
Explanation
Sin c = (1)/n
= (1)/1.51 = 0.6622
∴ c = sin-\(^1\) 0.6622 = 41.47
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