Question

what has the longer wavelength?
gamma waves
visible light
radio rays

Explanation:

Looking at the electromagnetic spectrum diagram, the wavelength scale is shown. Gamma waves have very short wavelengths (around \(10^{-13}\) - \(10^{-11}\) meters). Visible light has wavelengths in the range of \(10^{-7}\) meters. Radio waves have much longer wavelengths (starting from \(10^{3}\) meters and longer). So, among the options, radio waves have the longest wavelength.

Answer:

radio rays