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प्रश्न
Why does the sun appear red at sunrises and sunset?
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उत्तर
At the time of sunrise and sunset, the light from sun has to travel the longest distance of atmosphere to reach the observer. The light travelling from the sun loses blue light of short wavelength due to scattering, while the red light of long wavelength is scattered a little, so is not lost much. Thus blue light is almost absent in sunlight reaching the observer, while it is rich in red colour.
संबंधित प्रश्न
Which light has the longer wavelength : red light or blue light?
What is tyndall effect? Explain with an example.
Which component of sunlight is scattered away when the sun appears red at sunrise or sunset?
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
How would the sky appear when seen from the space (or moon)? Give reason for your answer.
The colour of sky, in direction other than of the sun, is blue. Explain.
Explain in brief the reason for the following :
Advanced sunrise
Which colour of white light is scattered the least? Give reason.
Draw a labelled diagram to show
- the reddish appearance of the sun at sunrise or sunset, and
- white appearance of the sun at noon when it is overhead.
What is the difference in colours of the Sun observed during sunrise/sunset and noon? Give explanation for each.
