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प्रश्न
Sunset is red because at that time the light coming from the sun has to travel:
(a) lesser thickness of earth's atmosphere
(b) greater thickness of earth's atmosphere
(c) varying thickness of earth's atmosphere
(d) along the horizon
उत्तर
greater thickness of the earth's atmosphere
The sun appears red at sunset because, at that time, the sun is near the horizon and, therefore, sunlight has to travel through a greater thickness of the earth's atmosphere.
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संबंधित प्रश्न
What did Newton demonstrate by his experiments with the prism?
Which colour of the spectrum has
shortest wavelength?
How many colours are there in a full spectrum of white light? Write the various colours of spectrum in the order, starting with red.
Name some everyday objects:
which reflect all the colours in sunlight
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?
Why does the sky appear dark (or black) to an astronaut instead of blue?
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.
State the difference in colours of the sun observed during sunrise/sunset and noon. Give explanation for each.
