Chapter 7, Problem 7.7QP

(a)

Interpretation Introduction

Interpretation:

The wavelength of light having a frequency of $\text{8}\text{.6 ×}{\text{10}}^{\text{13}}\text{Hz}$ has to be calculated.

Concept introduction:

Relation between frequency and wavelength is,

$\text{C}\text{=}\text{λν}$

C is the speed of light.

$\text{ν}$ is the frequency.

$\text{λ}$ is wavelength.

The distance between any two similar points of a wave is called wavelength

Figure 1

Frequency is defined as number of wavelengths of a wave that can pass through a point in one second.  Hertz is the unit of frequency.  It is defined as cycles per second.

(b)

Interpretation Introduction

Interpretation:

The frequency of light emitted from given wavelength has to be calculated.

Concept introduction:

Relation between frequency and wavelength is,

$\text{C}\text{=}\text{λν}$

C is the speed of light.

$\text{ν}$ is the frequency.

$\text{λ}$ is wavelength.

The distance between any two similar points of a wave is called wavelength

Figure 1

Frequency is defined as number of wavelengths of a wave that can pass through a point in one second.  Hertz is the unit of frequency.  It is defined as cycles per second.