Q. The speed of electromagnetic wave in vacuum depends upon the source of radiation
A) Increases as we move from $\gamma$-rays to radio waves
B) Decreases as we move from $\gamma$-rays to radio waves
C) Is same for all of them
D) None of these
Explanation
(c) Speed of EM waves in vacuum $= \frac{1}{\sqrt{\mu_{0}\varepsilon_{0}}} =$ constant
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.