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प्रश्न
The clouds are seen white. Explain
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उत्तर
The clouds are nearer the earth surface and they contain dust particles and aggregates of water molecules of sizes bigger than the wavelength of visible light. Therefore, the dust particles and water molecules present in clouds scatter all colours of incident white light from sun to the same extent and hence when the scattered light reaches our eye, the clouds are seen white.
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संबंधित प्रश्न
Name a natural phenomenon which is caused by the dispersion of sunlight in the sky.
What is the order of colours in a rainbow, from the outside to the inside?
Which colour of light has the shorter wavelength − red or violet?
Where in nature can you find evidence that white sunlight may be made of different colours?
Which phenomenon makes us see the sun:
a few minutes after actual sunset?
Explain why, the sun can be seen about two minutes before actual sunrise. Draw a diagram to Illustrate your answer.
Which effect is illustrated by the observation that when a beam of sunlight enters a dusty room, then its path becomes visible to us.
Complete the following statement:
When the sun is setting, the light from it has to travel a ................ thickness of the earth's atmosphere and only ................ wavelength ................ light is able to reach us. Sunset is therefore ................
Explain in brief the reason for the following :
Delayed sunset
The bluish colour of water in deep sea is due to ____________.
