Question

object appear to flicker when see through the space above a fire give reason​

Answer 1

Answer:

Human Eye and Colourful World

Random wavering or flickering of objects when seen through a turbulent stream of hot air rising above the fire is due to atmospheric refraction i.e., refraction of light by the earth's atmosphere. The air just above the fire becomes hotter than air further up.

Explanation:

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Answer 2

Answer:

The air above the holi fire is hot and hence is rarer than the air above it.

Due to this change in the atmospheric refractive index, the objects above and beyond the holi fire changes its position and hence appears to flicker