A) \[\text{1}{{0}^{\text{1}0}}\]
B) \[\text{1}{{0}^{\text{2}0}}\]
C) \[\text{1}{{0}^{\text{3}0}}\]
D) \[\text{1}{{0}^{\text{4}0}}\]
Correct Answer: C
Solution :
\[n=\frac{P}{E}=\frac{P}{hv}=\frac{P\lambda }{hc}\] \[=\frac{1000\times 198.6}{6.6\times {{10}^{-34}}\times 3\times {{10}^{8}}}\approx {{10}^{30}}\]
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