Visible light, X-rays, microwaves, and ultrasound waves are all used in medical and communication technologies.
Which of these waves travel at the same high speed in a vacuum?
visible light, X-rays, and microwaves
visible light, X-rays, and ultrasound waves
visible light, microwaves, and ultrasound waves
X-rays, microwaves, and ultrasound waves
198 exam-style questions on CIE IGCSE Physics Electromagnetic spectrum, covering Electromagnetic spectrum. Each one has a worked solution and a mark scheme showing where the marks go.