Question

Explain why, if we look at the object through hot air over the object appear to move slightly?​

Answer 1

Answer:

If we look at objects through the hot air over a fire, they appear to be moving or shaking slightly because of the refraction of light. When the air just above the fire gets heated up, it becomes optically rarer than the colder air further above the fire, which is optically denser.

Answer 2

Answer:

Here is your answer

Explanation:

The air just above the fire becomes hotter. This hotter air is optically rarer but the colder air further up is optically denser, so when we see the objects by the light coming from them through hot and cold air layers having different optical densities, then refraction of light takes place randomly due to which the objects appear to be moving slightly.