Choices A and B.
Work Step by Step
All EM waves have the same speed in a vacuum. As we see from Figure 22-8, X-rays and radio waves have different wavelengths and different frequencies.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.