A) \[0.556\,\times {{10}^{-6}}\,m\]
B) \[0.0556\,\times {{10}^{6}}\,m\]
C) \[0.0556\,\times {{10}^{-6}}\,m\]
D) \[0.556\,\times {{10}^{6}}\,m\]
Correct Answer: C
Solution :
\[\lambda =\frac{1}{2\times {{10}^{6}}}-\frac{1}{2.25\times {{10}^{6}}}\] \[=\frac{2.25-2}{2\times 2.25\times {{10}^{6}}}\] \[=\frac{0.25}{2\times 2.25\times {{10}^{6}}}\] \[=0.0556\times {{10}^{-6}}m\]
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