. A ray of light passes un deviated from medium 1 to medium 2
(a) When the angle of incidence at the boundary of two media is zero.
(b) When the refractive index of medium 2 is same as that of medium 1
(c) When i > r
(d) Both (a) & (b)
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Point B- When the refractive index of medium 2 is same as that of medium 1
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option b ok I think it is useful to you
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