A ray of light traveling in air enters the end of a rectangular block of a material that has an idex of refraction n = 1.35. The largest value of the angle $\theta$ for which total internal reflection occurs at the upper surface of the material is approximately
A) 75º
B) 48º
C) 56º
D) 78º
E) None of these is correct.

Question

A ray of light traveling in air enters the end of a rectangular block of a material that has an idex of refraction n = 1.35. The largest value of the angle $\theta$ for which total internal reflection occurs at the upper surface of the material is approximately
A) 75º 
B) 48º 
C) 56º 
D) 78º 
E) None of these is correct.

Quizplus · Accepted Answer

The Answer of  A ray of light traveling in air enters the end of a rectangular block of a material that has an idex of refraction n = 1.35. The largest value of the angle $\theta$ for which total internal reflection occurs at the upper surface of the material is approximately
A) 75º 
B) 48º 
C) 56º 
D) 78º 
E) None of these is correct.

A Ray of Light Traveling in Air Enters the End θ\thetaθ

A Ray of Light Traveling in Air Enters the End $\theta$