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प्रश्न
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 sides 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?
उत्तर
Blue colour is observed from the sides of the glass tank. The colour blue corresponds to the colour of the sky on a clear day. This is because blue light is scattered easily by the gas molecules of the air in the atmosphere. This scattered light reaches our eyes, which makes the sky appear blue.
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संबंधित प्रश्न
What is meant by scattering of light? Use this phenomenon to explain why the clear sky appears blue or the Sun appears reddish at sunrise.
Name some everyday objects:
which absorb all the colours in sunlight
Which phenomenon makes us see the sun:
a few minutes before actual sunrise?
Name the phenomenon due to which the stars seem higher in the sky than they actually are.
Explain why, if we look at objects through the hot air over a fire, the objects appear to be moving (or shaking) slightly.
Why does the sky appear dark (or black) to an astronaut instead of blue?
Name the point on the lens through which a ray of light passes undeviated.
Which colour of white light is scattered the least? Give reason.
Is the position of a star as seen by us its true position? Justify your answer.
How can we explain the reddish appearance of sun at sunrise or sunset? Why does it not appear red at noon?
