The wavenumber the reciprocal of the wavelength, is directly proportional to the energy of photons. The statement is true.
The wavenumber, which is the wavelength's reciprocal, is directly correlated with photon energy. The photons' energy rises in tandem with the wavenumber, which indicates shorter wavelengths.
Since h is Planck's constant and E is a photon's energy, we can conclude that as the wavenumber rises, so does the photons' energy. The statement is accurate as a result or we can say that the statement wavenumber (1/wavelength) is directly proportional to the energy of the photons is true.