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प्रश्न
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 ................
उत्तर
When the sun is setting, the light from it has to travel a greater thickness of the earth's atmosphere and only the longer wavelength red light is able to reach us. Sunset is therefore red in colour.
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संबंधित प्रश्न
With the help of scattering of light, explain the reason for the difference in colours of the Sun as it appears during sunset/sunrise and noon.
Name the phenomenon due to which the stars seem higher in the sky than they actually are.
Which of the two is scattered more easily, light of shorter wavelengths or light of longer wavelengths?
Which effect is illustrated by the observation that when a beam of sunlight enters a dusty room, then its path becomes visible to us.
The sky appears blue because some of the blue component of sunlight is scattered by:
(a) gas molecules present in air
(b) dust particles present in air
(c) water droplets suspended in air
(d) soot particles present in air
The danger signal is red. Why?
What characteristic property of light is responsible for the blue colour of the sky?
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.
In the atmosphere which colour of light gets scattered the least?
Which of the following statements is correct regarding the propagation of light of different colours of white light in the air?
