The wavelength of radio waves, compared to ultraviolet is AlongerBshorterCstays the sameDincreases then decreases

To understand the relationship between the wavelengths of radio waves and ultraviolet (UV) light, it is important to recognize the electromagnetic spectrum.

1. Electromagnetic Spectrum Overview: The electromagnetic spectrum is the range of all the different frequencies of electromagnetic radiation. This spectrum includes, from longer to shorter wavelengths: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

2. Wavelength Comparison: Radio waves are on the far left of the spectrum and have much longer wavelengths, typically ranging from about 1 millimeter to 100 kilometers. In contrast, ultraviolet light has much shorter wavelengths, typically in the range of 10 nanometers to 400 nanometers.

3. Conclusion: Since radio waves have longer wavelengths compared to ultraviolet light, the correct answer to the question is A) longer.

In summary, the wavelength of radio waves is longer than that of ultraviolet light, confirming the option A as the accurate choice.