1(viii)
Assertion (A): Blue light scatters more than red light in the atmosphere.
Reason (R): Intensity of scattered light is inversely proportional to the fourth power of wavelength.
- (a)(A) is true and (R) is false.
- (b)(A) is false and (R) is true.
- (c)Both (A) and (R) are true, and (R) is the correct explanation of (A).
- (d)Both (A) and (R) are true, but (R) is not the correct explanation of (A).
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Both (A) and (R) are true, and (R) is the correct explanation of (A).
Explanation
(A) is true: blue light has a shorter wavelength and scatters more than red light. (R) is true: scattering intensity varies inversely as the fourth power of wavelength. Therefore, (R) explains (A).