Question

which ems wave has a wavelength equal to the size of a fly and is used for heating food and transmitting information?
visible
microwaves
radio waves
infrared

Explanation:

Microwaves have wavelengths ranging from about 1 millimeter to 1 meter. A fly is typically a few millimeters to a couple of centimeters in size. Microwaves are used in microwave ovens for heating food and also in communication systems for transmitting information. Visible light has much shorter wavelengths (in the range of 400 - 700 nanometers). Radio waves have longer wavelengths (from about 1 meter upwards). Infrared has wavelengths longer than visible light but shorter than microwaves (from about 700 nanometers to 1 millimeter).

Answer:

Microwaves