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प्रश्न
Is the position of a star as seen by us its true position? Justify your answer.
उत्तर
No, the light of stars enters the earth’s atmosphere and undergoes refraction continuously before reaching the earth. The atmospheric refraction takes place under a gradually changing refractive index. Since, starlight bends towards the normal; the apparent position of the star is slightly different from its actual position.
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संबंधित प्रश्न
Why does the sun seem to rise two minutes before the actual sunrise and set two minutes after the actual sunset ? Explain with the help of labelled diagram.
What information do we get about sunlight from the formation of a rainbow?
What did Newton demonstrate by his experiments with the prism?
Name the phenomenon due to which the stars seem higher in the sky than they actually are.
What is the colour of the sunlight scattered by the air molecules in the atmosphere?
State whether the following statements are true or false:
The scattering away of red light makes the sky appear blue during the day time.
In white light of sun, maximum scattering by the air molecular present in the earth’s atmosphere is for ______.
Which phenomenon is responsible for making the path of light visible?
Describe an experiment to show that “sunlight is essential for photosynthesis”.
A beam of blue, green and yellow light passes through the earth's atmosphere. Name the colour which is scattered the most.
