Question

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

• A. $36.6m$
• B. $40.5m$
• C. $42.3m$
• D. $50.9m$

Answer 1

The correct option is A

$36.6m$

Step 1: Given data:

The electromagnetic wave of frequency $v=8.2\times {10}^{6}Hz$

The speed of light $c=3\times {10}^{8}m/s$

Step 2: Formula used:

The wavelength of the formula

$\lambda =\frac{c}{v}$

Now substitute the values in the formula,

, $$\begin{gathered} \lambda =\frac{3\times {10}^8}{8.2\times {10}^6} \\ \lambda =36.6m \end{gathered}$$

Therefore the wavelength of the electromagnetic waves transmitted from the source will be $36.6m$.

Hence, the correct option is (A).