A photon has an energy of 1.0 MeV. Calculate the frequency associated with this photon energy. State an appropriate unit in your answer.
The energy contained in a photon is given by the formula E = hf, where h is the Planck constant and f is the frequency of the photon. Since h = 4.110−15 eVs, f = E/h = 1.0103 eV / (4.110−15 eVs) = 2.11017s-1. Note: if the Planck constant is provided in J*s is suffices to divide by the elementary charge to obtain the value used here.
GN
Related Physics A Level answers
All answers ▸Describe and explain the photoelectric effect.
Explain the gaps within an absorption spectrum and where this may commonly occur in the universe
In an electric propulsion system, alpha particles are accelerated through a potential difference of 100kV at an average rate of 10^20 alpha particles per second. Calculate the average thrust the system can provide.
What is the period and frequency of a wave? - GCSE or A-Level students may ask this