Q24 of 29 Page 109

Why do stars appear twinkling? (AS7)

The light from the stars reach us after passing through the many layers of the atmosphere. As the light passes through these layers it is refracted many times by the particles present in the atmosphere. This random refraction makes the stars to twinkle.

The figure below depicts the stars twinkling.



More from this chapter

All 29 →
21

Explain why a tube immersed at a certain angle in a tumbler of water appears to have a mirror surface for a certain viewing position? (AS7)

 22

In what cases does a light ray not deviate at the interface of two media? (AS7)

 23

When we sit at a camp fire, objects beyond the fire are seen swaying. Give the reason for it. (AS7)

 25

Why does a diamond shine more than a glass piece cut to the same shape? (AS7)