Chapter 4, Problem 50AP

(a)

Interpretation Introduction

Interpretation:

The work function F or energy barrier needs to be determined that electron must overcome to leave uncharged piece of Cadmium.

Concept Introduction:

Photoelectric Effect:

When a beam of light strikes a metal surface can eject its valence electron. There is a minimum amount of energy is required by electrons to leave the metal surface is known as Work Function,F.

The work Function, F is given as:

  $\varphi =h{v}_0=\frac{hc}{{\lambda }_0}$

Where, h = Planck’s constant = $6.625\times {10}^{-34}\text{J s}$

v = threshold frequency of light

c = speed of light = $3\times {10}^8{\text{m s}}^{-1}$

λ = threshold wavelength of light