Explanation
$$\textbf{Hint: Time taken by sunlight to reach earth is 8 min and 20 seconds.}$$
$$\textbf{Correct option: Option (A).}$$
$$\textbf{Explanation:}$$
$$\textbf{Step 1:Time taken by sunlight to reach earth.}$$
Time taken by sunlight to reach earth, $$t=8\min ,20\sec $$
$$\Rightarrow t=8\times 60+20=480+20=500\operatorname{s}$$
$$\textbf{Step 2: Calculating the distance of sun from earth.}$$
We know that the velocity of light, $$c=3\times {{10}^{8}}m{{s}^{-1}}$$
The distance of sun from earth will be,
$$distance=velocity\times time$$
$$\Rightarrow d=c\times t=(3\times {{10}^{8}}m{{s}^{-1}})\times 500s=150\times {{10}^{9}}m=150\times {{10}^{6}}km$$
$$\textbf{Thus, distance of sun from earth is 150 million kilometers. Hence, option (A) is correct.}$$
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