If the refractive index of a medium is 2.0, what is the critical angle for total internal reflection when light travels from this medium to air?

Practice Questions

1 question
Q1
If the refractive index of a medium is 2.0, what is the critical angle for total internal reflection when light travels from this medium to air?
  1. 30°
  2. 45°
  3. 60°
  4. 90°

Questions & Step-by-step Solutions

1 item
Q
Q: If the refractive index of a medium is 2.0, what is the critical angle for total internal reflection when light travels from this medium to air?
Solution: Using the formula sin(θc) = n2/n1, where n1 = 2.0 (medium) and n2 = 1.0 (air), we find sin(θc) = 1.0/2.0 = 0.5, leading to θc = 60°.
Steps: 6

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