GMAS Physical Science Practice Test 2026 – All-in-One Guide to Excel in Your Exam Preparation!

In the electromagnetic spectrum, waves with long wavelengths correspond to low frequency. Radio waves occupy the longest-wavelength, lowest-frequency portion of the spectrum, which is why they are described as low-frequency, long-wavelength electromagnetic waves. X-rays and gamma rays have very short wavelengths and high frequencies, while visible light sits in between, with wavelengths shorter than radio waves. Because of the inverse relationship between wavelength and frequency (speed of light being constant), the description fits radio waves best.