Question

How can wavelength be calculated?

Answer 1

Explanation:

1. We know that wavelength is defined as the distance between two successive crests or troughs of a wave. The calculation of wavelength depends upon the information given.
2. Since, when the speed and frequency of the wave are given, the wavelength is calculated as follows:
   $\lambda =\frac{v}{f}$
   Where $\lambda$ is the wavelength, $v$ is the wave speed, and $f$ is the frequency.
3. And when the energy of a photon is given, the wavelength is calculated as follows:
   $\lambda =\frac{hc}{E}$
   where $\lambda$ is the wavelength, $h$ is the Planck’s constant, $c$ is the speed of light, and $E$ is the energy of the photon.