Advertisements
Advertisements
प्रश्न
The colour of sky, in direction other than of the sun, is blue. Explain.
Advertisements
उत्तर
As the light travels through the atmosphere, it gets scattered in different directions by the air molecules present in its path. The blue light due to its short wavelength is scattered more as compared to the red light of long wavelength. Thus the light reaching our eye directly from the sun is rich in red colour, while the light reaching our eye from all other directions is the scattered blue light. Therefore, the sky in a direction other than in the direction of the sun is seen blue.
APPEARS IN
संबंधित प्रश्न
Why does the sun seem to rise two minutes before the actual sunrise and set two minutes after the actual sunset ? Explain with the help of labelled diagram.
What colours make up white 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.
Which effect is illustrated by the observation that when a beam of sunlight enters a dusty room, then its path becomes visible to us.
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 blue colour of sky is due to:
(a) refraction of light
(b) dispersion of light
(c) diffraction of light
(d) scattering of light
Why does the sun appear red at sunrises and sunset?
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.
The clear sky appears blue because:
What is the difference in colours of the Sun observed during sunrise/sunset and noon? Give explanation for each.
