Question

why is refractive index of atmosphere diff. at diff. altitude

Answer 1

Refractive index is low as we move to the high altitudes

Answer 2

Here is ur ans
As we move above the Earth's surface, the density of air goes on decreasing. There is a gradual increase in the refractive index from the atmosphere to the Earth's surface. Thus, the refractive index of the atmosphere is different at different altitudes.
plzz mark as the brainliest