Home PYQs UPPSC UPPSC MCQs Prelims 2012 (GS Paper I)

Question

The reason of mirage is

  1. Interference of light
  2. Diffraction of light
  3. Polarisation of light
  4. Total internal reflection of light

Answer:

Option D: Total internal reflection of light

Detailed Solution:

The correct answer is “Total internal reflection of light”.

Mirages are caused by total internal reflection of light when it passes from cold air (denser) to hot air (rarer).