Question

Electromagnetic radiation has electric and magnetic field components. These two components:

• A. have same wavelength \( \lambda \), same frequency \( \nu \), same speed \( c \), and same amplitude
• B. have same wavelength \( \lambda \), same frequency \( \nu \), same speed \( c \), and different amplitude
• C. have same wavelength \( \lambda \), same frequency \( \nu \), same amplitude, and different speed \( c \)
• D. have same frequency \( \nu \), same speed \( c \), same amplitude, and different wavelength \( \lambda \)

Hint:

Electromagnetic waves always have electric and magnetic components with the same speed, frequency, and wavelength. Their amplitudes may vary.

Answer 1

The Correct Option is A

Step 1:
In electromagnetic waves, the electric and magnetic field components are always perpendicular to each other and to the direction of wave propagation.

Step 2:
For all electromagnetic waves, the electric and magnetic field components travel with the same speed (the speed of light) and they both have the same frequency and wavelength. The amplitude of both components can vary, but they have the same fundamental characteristics in terms of frequency, speed, and wavelength. Thus, the correct answer is option (1).