(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

11. The critical angle of a piece of transparent material in air is 37.30. What is the critical angle of the same material when it is immersed in water? (n = 1.33)

a. 41.40

b. 48.40

*c. 53.70

d. 63.00

e. 68.20

2. Relevant equations

βc=sin-1(n2/n1)

3. The attempt at a solution

n2=n1*sinβc-in-air

n2=sin(37.3)

βc-in-water=sin-1(n2/n1)

βc-in-water=sin-1(sin(37.3)/1.33)

βc-in-water=27.1°

what am I doing wrong they say the answer is 53.7° thanks!

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# Homework Help: Optics-Critical Angle

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