In the adjoining diagram, a wavefront AB, moving in air is incident on a plane glass surface XY. Its position CD after refraction through a glass slab is shown also along with the normals drawn at A and D. The refractive index of glass with respect to air ( μ = 1) will be equal to-
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
t = 
= 
so, 
= 
Δ ACB BC = AC sin θ
Δ ACD AD = AC sin φ′
So 
= 
= 
so 
= 
= 
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