which have the longer wavelength, radio waves or microwaves?

Radio waves have the longer wavelength compared with microwaves.

Quick Scoop

• Both radio waves and microwaves are parts of the electromagnetic spectrum, but they occupy different ranges.

• Radio waves are defined as the longest‑wavelength electromagnetic waves, with wavelengths that can range from about 1 millimeter up to tens or even hundreds of kilometers.

• Microwaves sit just above radio waves in frequency, meaning they have higher frequency and therefore shorter wavelength than radio waves.

So, if you are choosing which has the longer wavelength, the answer is radio waves , not microwaves.