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प्रश्न
How would the sky appear when seen from the space (or moon)? Give reason for your answer.
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उत्तर
On the moon, since there is no atmosphere, therefore there is no scattering of sun light incident on the moon surface. Hence to an observer on the surface of the moon (space), no light reaches the eye of the observer except the light directly from the sun. Thus the sky will have no colour and will appear black to an observer on the moon surface.
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संबंधित प्रश्न
With the help of a labelled diagram, explain why the sun appears reddish at the sun-rise and the sun-set.
Which colour of light has the shorter wavelength − red or violet?
Draw a neat and labelled diagram of the experimental set up for observing the scattering of light in a colloidal solution of sulphur to show how the sky appears blue, and the sun appears red at sunrise and sunset.
In an experiment to study the scattering of light by passing a beam of white light through a colloidal solution of sulphur in a transparent glass tank:
Which colour is observed from the front of the glass tank? Does this colour correspond to the colour of sky on a clear day or the colour of sky around the sun at sunset?
State the difference in colours of the sun observed during sunrise/sunset and noon. Give explanation for each.
Which phenomenon is responsible for making the path of light visible?
Which colour of white light is scattered the least? Give reason.
To an astronaut in a space-ship, the earth appears ______.
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.
How can we explain the reddish appearance of sun at sunrise or sunset? Why does it not appear red at noon?
