A) \[\frac{1.956\times {{10}^{16}}}{\lambda }\]
B) \[\frac{1.19\times {{10}^{8}}}{\lambda }\]
C) \[\frac{2.859\times {{10}^{5}}}{\lambda }\]
D) \[\frac{2.859\times {{10}^{16}}}{\lambda }\]
Correct Answer: B
Solution :
[b] \[E=\frac{hc}{\lambda }\times {{N}_{A}}\] \[=\frac{6.62\times {{10}^{-27}}\times 3\times {{10}^{10}}\times 6.02\times {{10}^{23}}}{\lambda }\] \[=\frac{1.19\times {{10}^{8}}}{\lambda }\]
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