Question

A certain radio station broadcasts on a frequency of $1890\text{kHz}$. Calculate the wavelength of the electromagnetic radiation?

• A. $158.7m$
• B. $100.5m$
• C. $135.9m$
• D. $88.2m$

Answer 1

The correct option is A $158.7m$

As We know,
$c=\nu \lambda$
Where, $\lambda$ is the wavelength of the electromagnetic radiation, $c$ is the speed of light and $\nu$ is the frequency of the radiation.
Given:
$\text{Frequency}\left(\nu \right)=1890\text{kHz}=1890\times {10}^3\text{Hz}$
$\text{Therefore,}$
$\lambda =\frac{c}{\nu }=\frac{3\times {10}^{8}m{s}^{-1}}{1890\times {10}^3{s}^{-1}}=158.7m$