Physics
Grade-10
Easy

Question

The temperatures at which the various layers of the atmosphere are present are given below in terms of degree Celsius. Identify the layer which has the highest refractive index.

  1. 24
  2. 18
  3. 47
  4. 35

hintHint:

Refractive index of a medium decreases with the increase in temperature

The correct answer is: 18


    Refractive index of a medium decreases with the increase in temperature. With the increase in temperature, the speed of light in that medium increases; thus, the refractive index decreases.
    So 18 is correct

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