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प्रश्न
Why does the sky appear dark (or black) to an astronaut instead of blue?
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उत्तर
The sky appears dark (or black) to an astronaut instead of blue because there is no atmosphere containing air molecules in outer space to scatter sunlight.
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संबंधित प्रश्न
Name a natural phenomenon which is caused by the dispersion of sunlight in the sky.
What colours make up white light?
Name the scientist who discovered that sunlight consists of seven colours.
What is the order of colours in a rainbow, from the outside to the inside?
State whether the following statements are true or false:
The scattering away of red light makes the sky appear blue during the day time.
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?
What characteristic property of light is responsible for the blue colour of the sky?
The colour of sky, in direction other than of the sun, is blue. Explain.
Which colour of white light is scattered the least? Give reason.
The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light ____________.
