A) \[4.43\times {{10}^{25}}\ lm\]
B) \[4.43\times {{10}^{26}}\ lm\]
C) \[4.43\times {{10}^{27}}\ lm\]
D) \[4.43\times {{10}^{28}}\ lm\]
Correct Answer: D
Solution :
\[\varphi =4\pi L=4\times 3.14\times 3.53\times {{10}^{27}}\]\[=4.43\times {{10}^{28}}lumen.\]
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