CBSE Class 10 Answered
Question: A ray of light travelling in air falls on the surface of a transparent glass slab at an angle of 60° with the normal to the surface. Find the angle made by the refracted ray with the normal within the glass slab. Refractive index of the glass slab is 
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Asked by Trisha Gupta | 21 Aug, 2021, 06:48: PM
Expert Answer
Refractive index of glass , μ = sin(i) / sin(r)
where i is angle of incidence and r is angle of refraction as shown in figure.
sin(r) = sin(i) / μ = sin(60) / √2 = 0.6124
Angle of refraction r = sin-1 ( 0.6124 ) = 37.8o
Answered by Thiyagarajan K | 21 Aug, 2021, 08:08: PM
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