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Exercise 1
A light bundle going through the air makes an angle with the normal on a glass plate of 30°
The refractive index of the glass plate is 3/2 and the refractive index of air is 1. What is the angle made by the light bundle with the normal when it's in the glass plate?
Snell's law: ni * sin(oi) = nt * sin(ot)
- ni = 1
- oi = 30°
- nt = 3/2
=> (1)*sin(30°) = (3/2)*sin(ot)
=> (1/2) = (3/2)*sin(ot)
=> sin(ot) = (1/3)
=> ot = ASIN(1/3)
=> ot = 19.5°