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The sun light reaches us as white and no...

The sun light reaches us as white and not as its components because

A

air medium is dispersive

B

air medium is non dispersive

C

air medium scatter the sunlight

D

spped of light depends on wavelength in vaccum

Text Solution

Verified by Experts

The correct Answer is:
B
The sun light reaches us as white light and not as its components because air medium is non-dispersive.
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Assertion (A): Sunlight reaches us without dispersion in the form of white light and not as its components. Reason (R): Dispersion takes place due to variation of refractive index for different wavelength but in vacuum the speed of light is independent of wavelength and hence vacuum is a non dispersive medium.

Sunlight reaches to us in composite from and not in it’s constituent colours because vacuum is non- dispersive . speed of all colours is same in vacuum. light behaves like a particle in vacuum. light travels in a straight line in vacuum

At noon the sun appears white as

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