Chapter 7, Problem 7.35QE

(a)

Interpretation Introduction

Interpretation:

The longest wavelength of light that can eject electrons from a sample of solid carbon has to be determined.

Concept Introduction:

The wave nature of any light can be described by its frequency, wavelength, and amplitude. The wavelength $\left(\text{λ, lambda}\right)$ of the light is defined as the distance between two successive peaks. Its SI unit is meter. The frequency $\left(v\right)$ is defined as number of waves that can pass through the one point in 1 second. Its SI unit is ${\text{s}}^{-1}$. The amplitude $\left(A\right)$ of the light wave is maximum height of a wave.

The relation between frequency $\left(v\right)$ and wavelength $\left(\text{λ}\right)$ of the light is as follows:

  $v=\frac{c}{\text{λ}}$        (1)

Here, $c$ is the speed of light and its value is $3.00\times {10}^8\text{ m/s}$.

(b)

Interpretation Introduction

Interpretation:

The spectral region of an electron ejected from a sample of solid carbon has to be determined.

Concept Introduction:

Refer to part (a).