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
Which light has the longer wavelength : red light or blue light?
Which colour of light has the shorter wavelength − red or violet?
What is the colour of the sunlight:
scattered by the dust particles in the atmosphere?
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?
When sunlight enters the earth’s atmosphere, state which colour of light is scattered
- the most and
- which the least.
Why does the sun appear red at sunrises and sunset?
Using the phenomenon of scattering of light, explain why there is a difference in the colour of the sun as it appears during sunrise and at noon.
A beam of blue, green, and yellow light passes through the earth's atmosphere. Name the colour which is scattered the least.
Draw a labelled diagram to show
- the reddish appearance of the sun at sunrise or sunset, and
- white appearance of the sun at noon when it is overhead.
Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?
