Physics

Problem

Which of the following conditions must be satisfied for total internal reflection to occur when a light ray in medium 1 strikes the boundary with medium 2? a)

n_1>n_2

and the angle of incidence equals the critical angle b)

n_1<n_2

and the angle of incidence exceeds the critical angle c)

n_1>n_2

and the angle of incidence exceeds the critical angle d)

n_1>n_2

and the angle of incidence is less than the critical angle

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