PhysicsLight: refractionJAMB
A ray passes from air into a glass block as shown. Given that sin 60° = 0.866 and sin 35° = 0.574, find the refractive index of the glass.
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Answer: B. 1.51
n = sin i ÷ sin r = 0.866 ÷ 0.574 ≈ 1.51.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.