Question

Electromagnetic waves vary in
a. the speed they travel in a vacuum.
b. wavelength and frequency.
c. the orientation of their electric and magnetic fields.
d. the way they reflect.

Answer 1

The electromagnetic waves are types of waves which do not require medium for them to pass through to be able to travel from one location to another. The different types of electromagnetic waves therefore vary only in their wavelength and frequency. Thus, the answer is letter B.