1(viii)
Assertion (A) : Infrared radiations travel long distance through a dense fog and mist.
Reason (R) : Infrared radiations undergo minimal scattering in earth's atmosphere.
- (a)both A and R are true and R is the correct explanation of A.
- (b)both A and R are True and R is not the correct explanation of А.
- (c)assertion is false but reason is true.
- (d)assertion is true but reason is false.
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both A and R are true and R is the correct explanation of A.
Explanation:
Assertion (A) is true : Infrared radiations can travel longer distances through fog and mist because they are less affected by scattering compared to visible light.
Reason (R) is true : Infrared radiations have longer wavelengths, and scattering is inversely proportional to the wavelength. Hence, infrared rays undergo minimal scattering.
Since minimal scattering allows infrared rays to penetrate dense fog and mist more effectively, the reason correctly explains the assertion.