Chapter 2, Problem 2.41SP

(a)

Interpretation Introduction

Interpretation:

The frequency of the given light with $\text{λ}\text{=}\text{1}\text{.3}\text{×}{\text{10}}^{\text{3}}\text{nm}$ has to be calculated.

Concept introduction:

Frequency:

Frequency of a wave describes the number of wave peaks that pass a fixed place per unit time.

The relationship between frequency $\left(\text{ν}\right)$ and wavelength $\left(\text{λ}\right)$ is given by

$\begin{array}{l}\text{λν}\text{=}\text{c}\\ \text{Where,}\\ \text{λ}\text{-}\text{wavelength}\\ \text{ν}\text{-}\text{frequency}\text{and}\text{c}\text{-}\text{speed}\text{of}\text{light}\text{.}\end{array}$

(b)

Interpretation Introduction

Interpretation:

The time taken by the light signal to travel optical cable with $\text{12}\text{km}$ length has to be calculated.

Concept introduction: