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The Critical Angle for Total Internal Reflection at a Diamond-Air °\degree

Question 25

Multiple Choice

The critical angle for total internal reflection at a diamond-air interface is 25 °\degree . Suppose light is incident at an angle of θ\theta with the normal. Total internal reflection will occur if the incident medium is:


A) air and θ\theta = 25 °\degree
B) air and θ\theta > 25 °\degree
C) air and θ\theta < 25 °\degree
D) diamond and θ\theta < 25 °\degree
E) diamond and θ\theta > 25 °\degree

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