A) frequency
B) amplitude
C) wavelength
D) None of these
Correct Answer: D
Solution :
In free space speed of electromagnetic wave \[c=\frac{1}{\sqrt{{{\mu }_{0}}{{\varepsilon }_{0}}}}=\frac{{{E}_{0}}}{{{B}_{0}}}=3\times {{10}^{8}}\,m{{s}^{-1}}\] Thus, the value of electromagnetic wave is constant and cannot be changed by changing any of the given factors.
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