A high-precision laboratory spectrometer emits a periodic diagnostic signal.
The spectrometer can emit signals using both radio waves and gamma rays.
State one property of waves that is the same for radio waves and gamma rays.
State two properties of waves that are different for radio waves and gamma rays.
The graph shows five pulses of the signal received from the spectrometer.
Explain how the graph shows that the signal is not digital.
Use the graph to estimate the average time between each pulse.
Calculate the frequency of the pulses in the signal. Give the unit.
