Question

If a source is transmitting electromagnetic wave of frequency $8.2\times 10^{6}Hz$, then wavelength of the electromagnetic waves transmitted from the source will be_________

• A. 36.5 m
• B. 40.5 m
• C. 42.3 m
• D. 50.9 m

Answer 1

Answer: (A)

Frequency of electromagnetic wave,
$v=8.2\times 10^{6}Hz$
Wavelength, $\lambda =$ ?
We know that, velocity of electromagnetic wave is given as
$c=v\lambda \Rightarrow \lambda =\frac{c}{v}$
$=\frac{3\times 10^8}{8.2\times 10^6}=36.5m$