The Critical Angle for Total Internal Reflection at a Diamond-Air $\theta$

question 13

Multiple Choice

The critical angle for total internal reflection at a diamond-air interface is 25°.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°
• B)air and \(\theta\)> 25°
• C)air and \(\theta\)< 25°
• D)diamond and \(\theta\)< 25°
• E)diamond and\(\theta\)> 25°

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