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.

option C

Explanation:

given,                                                                

the  Earth-Sun distance were doubled                

intensity of radiation is inversely proportional to d²

                 I₀ ∝

if the distance is doubled then                    

                 I ∝

                 I ∝              

                 I ∝

                 I ∝ I₀

hence, the correct answer is option C

v 154.9= 0.9 length length s little over 154.9cm

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