Question

1. which of the following has the longest wavelength and the lowest frequency? infrared waves microwaves radio waves x - ray waves

Explanation:

In the electromagnetic spectrum, radio waves have the longest wavelengths and the lowest frequencies among the options given. Infrared waves, microwaves have shorter wavelengths and higher frequencies compared to radio - waves. X - ray waves have very short wavelengths and high frequencies.

Answer:

C. radio waves