A) 18.8 m
B) 35.6 m
C) 42.8 m
D) 58 m
Correct Answer: B
Solution :
Here: frequency of electromagnetic wave \[f=8.2\times {{10}^{6}}Hz\] The relation for frequency of the electromagnetic waves is \[f=\frac{c}{\lambda }\]or \[8.2\times {{10}^{6}}=\frac{3\times {{10}^{8}}}{\lambda }\] or \[\lambda =\frac{3\times {{10}^{8}}}{8.2\times {{10}^{6}}}=35.6Hz\]
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