Question

which type of electromagnetic wave has the lowest frequency?
a. visible light
b. microwaves
c. gamma rays
d. ultraviolet

Explanation:

Electromagnetic spectrum frequency order: Gamma rays (highest frequency) > Ultraviolet > Visible light > Microwaves (lowest among options). Microwaves have longer wavelengths and lower frequencies compared to visible light, ultraviolet, and gamma rays.

Answer:

B. Microwaves