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Q. Why does the sky appear blue in colour?
As-per to the Rayleigh's scattering law the shorter wavelengths are scattered much more than the longer wavelengths. The blue look of sky is due to scattering of sunlight by the atmosphere. Blue light is scattered to a bigger extent than red light.
This scattered radiation results the sky to appear blue.
A satellite of mass "M" is in orbit around the earth. If a second satellite of mass "2M" is to be placed in the similar orbit, the second satellite must have a velocity which i
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The phenomenon of the formation of the Newton's rings can be explained on the basis of wave theory of light. When a light ray iP1 from an extended monochromatic light source S is a
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