What type of electromagnetic wave has a wavelength ranging from 1 mm to 30 cm?

The correct answer is microwaves. These electromagnetic waves have wavelengths that range from about 1 millimeter to 30 centimeters. This range places them in the radio spectrum, just higher than the radio waves and lower than infrared waves.

Microwaves are commonly utilized in various technologies, such as in microwave ovens, which use them to heat food by causing water molecules in the food to vibrate and produce heat. They also play a crucial role in telecommunications and radar technology.

The other types of electromagnetic waves have different characteristics: infrared waves typically have wavelengths longer than those of microwaves, ranging from about 700 nanometers to 1 millimeter; X-rays possess much shorter wavelengths, usually between 0.01 to 10 nanometers, which allows them to penetrate materials and are primarily used in medical imaging; ultraviolet waves have wavelengths shorter than visible light, from about 10 nanometers to 400 nanometers, and are responsible for effects like sunburn.