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प्रश्न
Why does the sun appear red at sunset?
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उत्तर
At sunset, the sun is near the horizon; hence, sunlight has to travel a longer distance through the atmosphere to reach us. During this journey, most of the blue colour present in sunlight, which has a shorter wavelength, gets scattered from our line of sight. Thus, the red colour present in sunlight, which has a longer wavelength and gets scattered the least, reaches our eye. As we see red colour everywhere overhead, the sun and the surrounding sky appear red at sunset.
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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.
Give the meaning of the term VIBGYOR. With which phenomenon is it connected?
Name the scientist who discovered that sunlight consists of seven colours.
Which colour of the spectrum has
shortest wavelength?
Which colour of light has the shorter wavelength − red or violet?
Name some everyday objects:
which absorb all the colours in sunlight
Which effect is illustrated by the observation that when a beam of sunlight enters a dusty room, then its path becomes visible to us.
Sunset is red because at that time the light coming from the sun has to travel:
In the atmosphere which colour of light gets scattered the least?
The clear sky appears blue because
