Chapter 1, Problem 1.45P

(a)

Interpretation Introduction

Interpretation:

The wavelength of a beam of ultraviolet light in $\text{m}$ is to be determined.

Concept introduction:

Wavelength is defined as the distance between two successive crests or troughs of the wave. It is measured in the direction of the wave and its units are the same as that of the distance. The crest is the point on the wave where the displacement of particles is at maximum. The trough is the point on the wave where the displacement of particles is at a minimum.

The conversion factor to convert $\text{nm}$ to $\text{m}$ is as follows:

$\text{1 nm}={\text{10}}^{-9}\text{m}$

(b)

Interpretation Introduction

Interpretation:

The wavelength of a beam of red light in $\stackrel{\text{o}}{\text{A}}$ is to be determined.

Concept introduction:

Wavelength is defined as the distance between two successive crests or troughs of the wave. It is measured in the direction of the wave and its units are the same as that of the distance. The crest is the point on the wave where the displacement of particles is at maximum. The trough is the point on the wave where the displacement of particles is at a minimum.

The conversion factor to convert $\text{pm}$ to $\text{m}$ is as follows:

$\text{1 pm}={\text{10}}^{-12}\text{m}$

The conversion factor to convert $\text{m}$ to $\stackrel{\text{o}}{\text{A}}$ is as follows:

$\text{1 m}={\text{10}}^{10}\stackrel{\text{o}}{\text{A}}$

So the conversion factor to convert $\text{pm}$ to $\stackrel{\text{o}}{\text{A}}$ is as follows:

$1\text{pm}={10}^{-2}\stackrel{\text{o}}{\text{A}}$