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Question
Find the maximum angle of refraction when a light ray is refracted from glass (μ = 1.50) to air.
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Solution
Given,
Refractive index (μ) of the glass = 1.5
We know from the definition of a critical angle (θc) that if a refracted angle measures more than 90°, then total internal reflection takes place.
Hence, the maximum angle of refraction is 90°.
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