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प्रश्न
In white light of sun, maximum scattering by the air molecular present in the earth’s atmosphere is for ______.
विकल्प
Red colour
Yellow colour
Green colour
Blue colour
उत्तर
In white light of the sun, maximum scattering by the air molecular present in the earth’s atmosphere is blue colour.
Explanation:
When the light of a certain frequency falls on that atom or molecule, this atom or molecule responds to the light whenever the size of the atom or molecule is comparable to the wavelength of light. The sizes of nitrogen and oxygen molecules in atmosphere are comparable to the wavelength of blue light. These molecules act as scattering centers for the scattering of blue light. This is also the reason that we see the sky as blue.
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संबंधित प्रश्न
Explain giving reason why the sky appears blue to an observer from the surface of the earth? What will the colour of the sky be for an astronaut staying in the international space station orbiting the earth? Justify your answer giving reason.
Name some everyday objects:
which absorb all the colours in sunlight
We can see the sun before the actual sunrise by about:
(a) 5 minutes
(b) 2 minutes
(c) 2 hours
(d) 20 minutes
What is tyndall effect? Explain with an example.
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
When sunlight enters the earth’s atmosphere, state which colour of light is scattered
- the most and
- which the least.
The colour of sky, in direction other than of the sun, is blue. Explain.
A beam of blue, green, and yellow light passes through the earth's atmosphere. Name the colour which is scattered the least.
Blue litmus is added to two test tubes A and B containing dilute HCl and NaOH. Answer respectively. In which test tube a colour change will be observed? State the colour change and give its reason.
The colour of clear sky from the earth appears blue but from the space it appears black. Why?
