A) \[\sqrt{{{\mu }_{0}}{{\varepsilon }_{0}}}\]
B) \[\frac{\sqrt{{{\mu }_{0}}}}{{{\varepsilon }_{0}}}\]
C) \[\frac{\sqrt{{{\varepsilon }_{0}}}}{{{\mu }_{0}}}\]
D) \[\frac{1}{\sqrt{{{\mu }_{0}}{{\varepsilon }_{0}}}}\]
Correct Answer: D
Solution :
The velocity of electromagnetic waves in free space is given by \[c=\frac{1}{\sqrt{{{\mu }_{0}}{{\varepsilon }_{0}}}}=3\times {{10}^{8}}m{{s}^{-1}}\]
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