Which of the following types of electromagnetic radiation has the lowest frequency?
A Infrared waves
B Gamma rays
C Ultraviolet waves
D Microwaves

The electromagnetic radiation that has the lowest frequency is ; ( D ) Microwaves

Microwaves have a wavelength that ranges between 1 mm to 1 m and a frequency of  approximately  30 GHz while the electromagnetic radiation with the highest frequency is Gamma rays , Infra red rays posses a frequency of about 3 * 10^13 Hz. therefore Microwaves posses the least frequency value

Hence we can conclude that The electromagnetic radiation that has the lowest frequency is Microwaves.

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D Microwaves

Explanation:

It has an electromagnetic radiation with wavelengths ranging from about one meter to one millimeter; with frequencies between 300 MHz (1 m) and 300 GHz (1 mm)

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