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प्रश्न
The colour of sky, in direction other than of the sun, is blue. Explain.
उत्तर
As the light travels through the atmosphere, it gets scattered in different directions by the air molecules present in its path. The blue light due to its short wavelength is scattered more as compared to the red light of long wavelength. Thus the light reaching our eye directly from the sun is rich in red colour, while the light reaching our eye from all other directions is the scattered blue light. Therefore, the sky in a direction other than in the direction of the sun is seen blue.
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संबंधित प्रश्न
Explain giving reason why the sky appears blue to an observer from the surface of the earth? What will the colour of the sky be for an astronaut staying in the international space station orbiting the earth? Justify your answer giving reason.
Name a natural phenomenon which is caused by the dispersion of sunlight in the sky.
Which colour of the spectrum has
shortest wavelength?
Which phenomenon makes us see the sun:
a few minutes before actual sunrise?
What is the colour of the sunlight:
scattered by the dust particles in the atmosphere?
What is the colour of the sunlight scattered by the air molecules in the atmosphere?
What colour does the sky appear to an astronaut?
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
State the difference in colours of the sun observed during sunrise/sunset and noon. Give explanation for each.
Draw a labeled diagram to show
(i) the reddish appearance of the sun at the sunrise or the sunset and
(ii) white appearance of the sun at noon when it is overhead.
