5. Quantum and Nuclear

Photon Basics — Quiz

Test your understanding of photon basics with 5 practice questions.

Practice Questions

Question 1

Given a photoelectric experiment yields a linear fit of stopping potential $V_{s}$ versus frequency $f$ described by $V_{s}=(4.14\times10^{-15})\,f -1.80$, what is $V_{s}$ for $f=7.00\times10^{14}\,\mathrm{Hz}$?

Question 2

Which formula gives the Compton wavelength shift $\Delta\lambda$ for scattering angle $\theta$?

Question 3

An X-ray of initial wavelength $0.050\,\mathrm{nm}$ scatters at $\theta=90^\circ$ from a free electron. What is the scattered wavelength $\lambda'$?

Question 4

Express the momentum $p$ of a photon in terms of its frequency $f$, Planck’s constant $h$, and speed of light $c$.

Question 5

A 10.0 W laser beam is perfectly reflected by a surface. What average force does the beam exert?