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प्रश्न
The clouds are seen white. Explain
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उत्तर
The clouds are nearer the earth surface and they contain dust particles and aggregates of water molecules of sizes bigger than the wavelength of visible light. Therefore, the dust particles and water molecules present in clouds scatter all colours of incident white light from sun to the same extent and hence when the scattered light reaches our eye, the clouds are seen white.
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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.
What is meant by dispersion of white light? Describe the formation of rainbow in the sky with the help of a diagram.
We can see the sun before the actual sunrise by about:
(a) 5 minutes
(b) 2 minutes
(c) 2 hours
(d) 20 minutes
State whether the following statements are true or false:
The scattering away of blue light makes the sun appear red at sunset.
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 ................
How would the sky appear when seen from the space (or moon)? Give reason for your answer.
What characteristic property of light is responsible for the blue colour of the sky?
Twinkling of stars is due to atmospheric
Is the position of a star as seen by us its true position? Justify your answer.
Why is the colour of the clear sky blue?
