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प्रश्न
The sky appears blue because some of the blue component of sunlight is scattered by:
(a) gas molecules present in air
(b) dust particles present in air
(c) water droplets suspended in air
(d) soot particles present in air
उत्तर
gas molecules present in air
The sky appears blue because some of the blue component of sunlight is scattered by the gas molecules (nitrogen and oxygen) present in the air.
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संबंधित प्रश्न
Name some everyday objects:
which absorb all the colours in sunlight
Which phenomenon makes us see the sun:
a few minutes before actual sunrise?
Draw a neat and labelled diagram of the experimental set up for observing the scattering of light in a colloidal solution of sulphur to show how the sky appears blue, and the sun appears red at sunrise and sunset.
Out of blue light and red light, which one is scattered more easily?
The red colour of the sun at the time of sunrise and sunset is because:
(a) red colour is least scattered
(b) blue colour is least scattered
(c) red colour is most scattered
(d) blue colour is most scattered
What characteristic property of light is responsible for the blue colour of the sky?
In white light of sun, maximum scattering by the air molecular present in the earth’s atmosphere is for ______.
Answer the following question:
Why is the Tyndall effect shown by colloidal particles? State four instances of observing the Tyndall effect.
Is the position of a star as seen by us its true position? Justify your answer.
How can we explain the reddish appearance of sun at sunrise or sunset? Why does it not appear red at noon?
