1(viii)
Assertion (A) : Tiny air molecules scatter blue light more than red light.
Reason (R) : The refractive index of a medium is greater for blue light than red light.
- (a)(A) is true but (R) is false.
- (b)(A) is false but (R) is true.
- (c)Both (A) and (R) are true and (R) is correct explanation of (A).
- (d)Both (A) and (R) are true and (R) is not the correct explanation of (A).
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Both (A) and (R) are true and (R) is not the correct explanation of (A).
Explanation:
Assertion is true because blue light has a shorter wavelength than red light, so it is scattered more by tiny air molecules. Reason is also true because the refractive index of a medium is greater for blue light than for red light. However, scattering depends mainly on wavelength and not on refractive index.
Therefore, both (A) and (R) are true, but (R) is not the correct explanation of (A).