Chapter 9, Problem 9C.6AE

Interpretation Introduction

Interpretation:

The speed of a photoelectron ejected from an orbital of ionization energy $\text{12}\text{.0 eV}$ by a photon of radiation of wavelength $\text{100 nm}$ has to be calculated.

Concept introduction:

The small packet of energy is known as the quanta.  Light is emitted in the form of quanta or photons.  The formula for energy of photon is given by,

    $E=\frac{hc}{\lambda }$

The ejection of electrons from the surface of an object takes place, when it absorbs certain range of radiation.  Thus, there is a minimum energy require to eject an electron from the surface.  This energy is called as work function.