Question

A certain radio station broadcasts on a frequency of $980\text{kHz (kilohertz)}$. What is the wavelength of the electromagnetic radiation broadcasted by the station?

• A. 306.12 m
• B. 30.61 m
• C. 30.30 m
• D. 310.05 m

Answer 1

The correct option is A 306.12 m

We know, $c=v\lambda$
Given, freqeuncy $\left(v\right)=980\text{kHz}=980\times {10}^3\text{Hz}$
Therefore,
$\lambda =\frac{c}{v}=\frac{3\times {10}^8{\text{m s}}^{-1}}{980\times {10}^3{\text{s}}^{-1}}=306.122$ m