The glass with the refractive index n1 = 1.5 is surrounded by another glass with the refractive index n2. Determine the refractive index n2 if the critical angle for total internal reflection between the two is 80°.

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The glass with the refractive index n1 = 1.5 is surrounded by another glass with the refractive index n2. Determine the refractive index n2 if the critical angle for total internal reflection between the two is 80°.

PRADEEP KUMAR 23rd Nov, 2021

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Answer (1)

PRADEEP KUMAR 23rd Nov, 2021

θ= 80°

n1 = 1.5

sinθ= n2/n1

n2= n1 × 80°

n2 = 1.48

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