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प्रश्न
Explain why, when the sun is overhead at noon, it appears white, but when the same sun is near the horizon at sunset, it appears red.
Explain why the Sun appears white when it is overhead at noon, but the same Sun appears red when it is near the horizon at sunset.
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उत्तर
When the sun is overhead at noon, sunlight has to travel a shorter distance through the earth's atmosphere to reach us. During this short journey of sunlight through the atmosphere, only a small amount of the blue light is scattered from the white light, keeping most of the white colour intact within it.
However, at sunset or sunrise, the sun appears red because it is near the horizon, and sunlight has to travel a relatively longer distance through the earth's atmosphere to reach us. During this long journey, most of the blue colour is scattered from our line of sight. Therefore, the light reaching our eyes consists of the colour red of sunlight, which is of longer wavelength and is scattered the least.
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संबंधित प्रश्न
Why does the sun appear reddish early in the morning? Will this phenomenon be observed by an observer on the moon? Justify your answer with a reason.
How many colours are there in a full spectrum of white light? Write the various colours of spectrum in the order, starting with red.
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.
What is the colour of the sunlight:
scattered by the dust particles in the atmosphere?
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
Sunset is red because at that time the light coming from the sun has to travel:
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?
What is the difference in colours of the Sun observed during sunrise/sunset and noon? Give explanation for each.
