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प्रश्न
When sunlight enters the earth’s atmosphere, state which colour of light is scattered
- the most and
- which the least.
उत्तर
Violet colour is scattered the most and red the least, as the intensity of scattered light is found to be inversely proportional to the fourth power of the wavelength of light.
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संबंधित प्रश्न
Which color of white light is scattered the least and why?
Name the scientist who discovered that sunlight consists of seven colours.
Which phenomenon makes us see the sun:
a few minutes before actual sunrise?
Which phenomenon makes us see the sun:
a few minutes after actual sunset?
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.
The sky appears blue because some of the blue component of sunlight is scattered by:
(a) gas molecules present in air
(b) dust particles present in air
(c) water droplets suspended in air
(d) soot particles present in air
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 front 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?
The clouds are seen white. Explain
Describe an experiment to show that “sunlight is essential for photosynthesis”.
Draw a labelled diagram to show (i) reddish appearance of the sun at the sunrise or the sunset and (ii) white appearance of the sun at noon when it is overhead.
