Question

what is the best definition of low electromagnetic energy?
low electromagnetic energy has long wavelengths and high frequency.
low electromagnetic energy has long wavelengths and low frequency.
low electromagnetic energy has short wavelengths and low frequency.

Explanation:

Electromagnetic energy's wavelength and frequency are inversely related. Low - energy electromagnetic waves have long wavelengths. According to the wave equation \(c = \lambda f\) (where \(c\) is the speed of light, \(\lambda\) is wavelength, and \(f\) is frequency), when \(\lambda\) is large (long wavelength), \(f\) (frequency) is small (low frequency).

Answer:

Low electromagnetic energy has long wavelengths and low frequency.