The electromagnetic wavelength is 300nm. What should be the wavelength for the photon energy

The electromagnetic wavelength is 300nm. What should be the wavelength for the photon energy in it to increase 1.5 times?

For an increase in the photon energy by 1.5 times, it is necessary and sufficient that the frequency also begins to increase by 1.5 times, that is, E = H * v (where E is the photon energy, H is Planck’s constant, v is the frequency of light). For the wavelength to be reduced by 1.5 times, that is, c = ν * λ (where c is the speed, v is the frequency, λ is the wavelength), you need: 300: 1.5 = 200 (nm).

Answer: 200 (nm).