The refractive index of ionosphere is

The refractive index of ionosphere is
  1. zero
  2. more than one
  3. less than one
  4. 1 (one)

Solution

Ionospere is the topmost layer of earth atmosphere whose density is much smaller than the density of lower layers of earth's atomosphere. Therefore, refractive index ionospher is less than one.

Asked in: AP EAMCET 2023 (17 May Shift 2)

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