Question

All components of the electromagnetic spectrum in vacuum have the same

• A. Energy
• B. Velocity
• C. Wavelength
• D. Frequency

Answer 1

The correct option is B

Velocity

Explanation for the correct option B: velocity

1. Speed of the electromagnetic wave in the vacuum, $v=\frac{1}{\sqrt{{\mu }_0{\epsilon }_0}}$
2. As the value of ${\mu }_0$ and ${\epsilon }_0$ is same for all the components.
3. Energy, wavelength and frequency are different for all the components of electromagnetic spectrum.

Hence, option (B) is correct.