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If the Earth-Sun distance were doubled, the intensity of radiation from the Sun that reaches the Earth's surface would If the Earth-Sun distance were doubled, the intensity of radiation from the Sun that reaches the Earth's surface would

A. quadruple.
B. double.
C. drop to 14.
D. drop to 12.

Answer :

Answer:

option C

Explanation:

given,                                                                

the  Earth-Sun distance were doubled                

intensity of radiation is inversely proportional to d²

                 I₀ ∝ [tex]\dfrac{1}{d^2}[/tex]

if the distance is doubled then                    

                 I ∝ [tex]\dfrac{1}{(2d)^2}[/tex]

                 I ∝ [tex]\dfrac{1}{4d^2}[/tex]              

                 I ∝ [tex]\dfrac{1}{4}\dfrac{1}{d^2}[/tex]

                 I ∝ [tex]\dfrac{1}{4}[/tex]I₀

hence, the correct answer is option C

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