Chapter 2, Problem 2.109CHP

Interpretation Introduction

Interpretation:

The energy of the given light with $\text{λ}\text{=}\text{780}\text{nm}$ has to be calculated and also region of this wavelength in electromagnetic spectrum has to be given.

Concept introduction:

Planck’s equation:

The relationship between energy $\left(\text{E}\right)$ and frequency $\left(\text{ν}\right)$ is given by Planck’s equation

$\begin{array}{l}\text{E}\text{=}\text{hν}\text{=}\frac{\text{hc}}{\text{λ}}\\ \text{where,}\\ \text{E}\text{-}\text{energy}\\ \text{h}\text{-}\text{planck's}\text{constant}\\ \text{c}\text{-}\text{speed}\text{of}\text{light}\text{and}\text{λ}\text{-}\text{wavelength}\text{.}\end{array}$