Advertisements
Advertisements
Question
The clouds are seen white. Explain
Advertisements
Solution
The clouds are nearer the earth surface and they contain dust particles and aggregates of water molecules of sizes bigger than the wavelength of visible light. Therefore, the dust particles and water molecules present in clouds scatter all colours of incident white light from sun to the same extent and hence when the scattered light reaches our eye, the clouds are seen white.
APPEARS IN
RELATED QUESTIONS
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.
Which light has the longer wavelength : red light or blue light?
How many colours are there in a full spectrum of white light? Write the various colours of spectrum in the order, starting with red.
Where in nature can you find evidence that white sunlight may be made of different colours?
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?
Sunset is red because at that time the light coming from the sun has to travel:
When sunlight enters the earth’s atmosphere, state which colour of light is scattered
- the most and
- which the least.
A beam of blue, green and yellow light passes through the earth's atmosphere. Name the colour which is scattered the most.
In the atmosphere which colour of light gets scattered the least?
