Advertisements
Advertisements
प्रश्न
The clouds are seen white. Explain
Advertisements
उत्तर
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
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.
With the help of scattering of light, explain the reason for the difference in colours of the Sun as it appears during sunset/sunrise and noon.
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 color of white light is scattered the least and why?
Name some everyday objects:
which reflect all the colours in sunlight
Explain why, if we look at objects through the hot air over a fire, the objects appear to be moving (or shaking) slightly.
What is the colour of the sunlight scattered by the air molecules in the atmosphere?
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.
Why is the Tyndall effect shown by colloidal particles?
At noon the sun appears white as:
