Refraction — true or false?

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Light bends towards the normal when entering a denser medium.

2. Statement is true

   Yes

   Statement

   Snell's law states n₁sinθ₁ = n₂sinθ₂.

3. Statement is true

   No

   Statement

   Frequency of light changes during refraction.

4. Statement is true

   No

   Statement

   Total internal reflection happens going from rarer to denser medium.

5. Statement is true

   Yes

   Statement

   A mirage is caused by refraction in air layers of different densities.