If you want to study how energetic waves affect matter, you should study waves with a
higher frequency and shorter wavelength
lower frequency and shorter wavelength
longer wavelength and lower frequency

Higher Frequency and shorter wavelength. The energy of light waves increases when there is an increasing frequency and a higher frequency means there are shorter wavelengths. The equation lambda=c/f where lambda is wavelength and f is frequency and c is the speed of the wave.

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