Q3 of 234 Page 292

Which phenomenon makes us see the sun:

(a) a few minutes before actual sunrise?


(b) a few minutes after actual sunset?

(a) The phenomenon which makes us see the sun a few minutes before actual sunrise is atmospheric refraction of light.

(b) The phenomenon which makes us see the sun a few minutes after actual sunset is atmospheric refraction of sunlight.


More from this chapter

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1

Name the phenomenon which causes the twinkling of stars.

 2

Name two effects produced by the atmospheric refraction.

 4

Atmospheric refraction causes advance sunrise and delayed sunset. By how much time is:

(a) sunrise advanced?


(b) sunset delayed?

 5

State whether the following statement is true or false:

The planets twinkle at night due to atmospheric refraction of light.