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प्रश्न
Which light has the longer wavelength : red light or blue light?
उत्तर
Red light has the longest wavelength among all the colours in the visible spectrum.
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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.
Which color of white light is scattered the least and why?
Name a natural phenomenon which is caused by the dispersion of sunlight in the sky.
Which phenomenon makes us see the sun:
a few minutes before actual sunrise?
The blue colour of sky is due to:
(a) refraction of light
(b) dispersion of light
(c) diffraction of light
(d) scattering of light
Complete the following statement:
When the sun is setting, the light from it has to travel a ................ thickness of the earth's atmosphere and only ................ wavelength ................ light is able to reach us. Sunset is therefore ................
When sunlight enters the earth’s atmosphere, state which colour of light is scattered
- the most and
- which the least.
Answer the following question:
Why is the Tyndall effect shown by colloidal particles? State four instances of observing the Tyndall effect.
In the atmosphere which colour of light gets scattered the least?
What is the difference in colours of the Sun observed during sunrise/sunset and noon? Give explanation for each.
