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 $\theta$ with the normal. Total internal reflection will occur if the incident medium is:

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

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