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प्रश्न
The colour of sky, in direction other than of the sun, is blue. Explain.
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उत्तर
As the light travels through the atmosphere, it gets scattered in different directions by the air molecules present in its path. The blue light due to its short wavelength is scattered more as compared to the red light of long wavelength. Thus the light reaching our eye directly from the sun is rich in red colour, while the light reaching our eye from all other directions is the scattered blue light. Therefore, the sky in a direction other than in the direction of the sun is seen blue.
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संबंधित प्रश्न
What is meant by scattering of light? Use this phenomenon to explain why the clear sky appears blue or the Sun appears reddish at sunrise.
Name some everyday objects:
which reflect all the colours in sunlight
Explain why, the sun can be seen about two minutes before actual sunrise. Draw a diagram to Illustrate your answer.
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.
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 ................
The danger signal is red. Why?
In white light of sun, maximum scattering by the air molecular present in the earth’s atmosphere is for ______.
What is the colour of the clear sky during day time? Give reason for it.
Name the point on the lens through which a ray of light passes undeviated.
The clear sky appears blue because:
