A) \[9\,\,\times \,\,{{10}^{5}}\]
B) \[5\times {{10}^{9}}\]
C) \[2.25\times {{10}^{11}}\]
D) \[3\times {{10}^{19}}\]
Correct Answer: B
Solution :
\[{{n}_{i}}=1.5\times {{10}^{16}}\] \[{{n}_{h}}=4.5\times {{10}^{22}}\] \[Law\,\,of\text{ }mass\text{ }action\text{ }{{n}_{e}}{{n}_{h}}=n_{i}^{2}\] \[{{n}_{e}}=\,\,\frac{n_{i}^{2}}{{{n}_{h}}}\,\,=\,\,\frac{{{(1.5\times {{10}^{16}})}^{2}}}{(4.5\times {{10}^{22}})}\] \[{{n}_{e}}\,\,=\,\,5\times {{10}^{9}}\,\left( \frac{1}{{{m}^{3}}} \right)\]You need to login to perform this action.
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