Answer:
1) the wave's amplitude
2) the wave's frequency
3) the wavelength
Step-by-step explanation:
The energy of EM wave is given by:
E = h ν = h c/λ
Thus, energy of the EM wave directly proportional to the frequency of the wave and inversely proportional to its wavelength.
The energy of EM wave is also related to its amplitude. It is directly proportional to the square of the amplitude:
E ∝ A²