Chapter 7, Problem 42E

Interpretation Introduction

Interpretation:

The frequency of FM radio waves having a wavelength of $3.55\text{ m}$ is to be calculated.

Concept Introduction:

The electromagnetic spectrum is the range of all types of radiation.

Electromagnetic waves are described by three properties, namely, frequency $\text{(ν)}$, wavelength $\text{(λ)}$ and energy of the photon (E), which are related to each other by the following formula:

$\begin{array}{c}\text{E}=\frac{\text{h}\times \text{c}}{\text{λ}}\\ =\text{h}\times \text{ν}\end{array}$

Here “$\text{h}$” is Plank’s constant, “$\lambda$” is the wavelength, “$\nu$” is the frequency and “$\text{c}$” is the speed of light.

Radio waves are a form of electromagnetic radiations with long wavelengths. The energy of radio waves is quite small. The radio captures radio waves emitted by the radio stations.