What causes the difference in energy between various forms of electromagnetic radiation?

The correct choice regarding what causes the difference in energy between various forms of electromagnetic radiation is wavelength. The energy of electromagnetic radiation is inversely related to its wavelength. This means that as the wavelength decreases, the energy increases. This relationship can be understood through the equation E = hf, where E is energy, h is Planck’s constant, and f is frequency. Since wavelength and frequency are inversely related (as the wavelength shortens, the frequency increases), it follows that changes in wavelength correspond to changes in energy.

In the context of electromagnetic radiation, different types such as radio waves, visible light, and gamma rays exhibit varying wavelengths. Each type possesses distinct energy levels associated with its wavelength, further supporting the significance of wavelength in determining energy differences within electromagnetic radiation. Understanding this concept is essential in fields like radiography, where different forms of radiation are utilized for various diagnostic imaging purposes.