Microwaves are electromagnetic waves used in broadcasting and telecommunications. When do these waves increase in frequency? A.
when the source moves away from you
B.
when the source moves toward you
C.
when you move away from the source
D.
when you move away from the source and the source moves away from you

the scientific method.

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.