A) \[3\times {{10}^{8}}\,Hz\]
B) \[3\times {{10}^{18}}\,Hz\]
C) \[3\times {{10}^{10}}\,Hz\]
D) \[3\times {{10}^{15}}\,Hz\]
Correct Answer: B
Solution :
\[\nu \,=\frac{c}{\lambda }=\frac{3\times {{10}^{8}}}{1\times {{10}^{-10}}}=3\times {{10}^{18}}Hz\]
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