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 ▸State what is meant by a Doppler shift and describe how it was used to study the movement of galaxies.
A man weighing 600N steps on a scale that contains a spring. The spring is compressed 1cm under their weight. Find the force constant of the spring and total work done on its compression.
Use band theory to explain the changes in the resistance of an intrinsic semiconductor as temper changes.
A box initially at rest is on a plank, of length 5m, that is elevated at an angle such that tan(a)=3/4. When it reaches the end of the plank it has velocity 5ms^-1. Calculate the average frictional force on the box.