A 60° Prism Has a Refractive Index of 1

question 161

Multiple Choice

A 60° prism has a refractive index of 1.64 for blue light and 1.61 for red light. Calculate the difference in the angle of incidence for the initial red and blue light ray that is refracted inside the prism and just undergoes total internal reflection at the opposite face of the prism.

• A) 4.1°
• B) 1.5°
• C) 3.2°
• D) 2.4°
• E) 0.4°

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