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प्रश्न
Sunset is red because at that time the light coming from the sun has to travel:
विकल्प
lesser thickness of earth's atmosphere
greater thickness of earth's atmosphere
varying thickness of earth's atmosphere
along the horizon
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उत्तर
Greater thickness of the earth's atmosphere
Explanation:
The sun appears red at sunset because, at that time, the sun is near the horizon and, therefore, sunlight has to travel through a greater thickness of the earth's atmosphere.
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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.
What is the colour of the sunlight scattered by the air molecules in the atmosphere?
Why does the sky appear dark (or black) to an astronaut instead of blue?
Why does the sun appear red at sunset?
The blue colour of sky is due to:
(a) refraction of light
(b) dispersion of light
(c) diffraction of light
(d) scattering of light
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.
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.
Why is the Tyndall effect shown by colloidal particles?
Draw a labelled diagram to show (i) reddish appearance of the sun at the sunrise or the sunset and (ii) white appearance of the sun at noon when it is overhead.
Why is the colour of the clear sky blue?
