2. Why can't we see the image of an aeroplane when it moves to great heights in the sky ? 

Asked by prasannasivaa | 8th Jan, 2016, 01:39: PM

Expert Answer:

Our eyes can see properly only up to a certain distance. When a far away object is seen through the eye, the light from the object does not reach the eye efficiently.
Hence, we cannot see the aeroplane when it flies to a great height.

Answered by Romal Bhansali | 8th Jan, 2016, 03:22: PM