The Total solution for NCERT class 6-12
Explain this common observation clearly : If you look out of thewindow of a fast moving train, the nearby trees, houses etc. seem to moverapidly in a direction opposite to the train’s motion, but the distant objects(hill tops, the Moon, the stars etc.) seem to be stationary. (In fact, sinceyou are aware that you are moving, these distant objects seem to move withyou).
Line of sight is defined as an imaginary line joining an objectand an observer’s eye. When we observe nearby stationary objects such as trees,houses, etc. while sitting in a moving train, they appear to move rapidly inthe opposite direction because the line of sight changes very rapidly.
On the other hand, distant objects such as trees, stars, etc.appear stationary because of the large distance. As a result, the line of sightdoes not change its direction rapidly.