PhysicsLight: refractionJAMB
Find the critical angle for glass of refractive index 1.5.
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Answer: A. 41.8°
sin c = 1/n = 1/1.5 = 0.667, so c ≈ 41.8°.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.