Question

Electromagnetic waves are:

• A. Only longitudinal
• B. Only transverse
• C. Both longitudinal and transverse
• D. Neither longitudinal nor transverse

Hint:

In EM waves, $E$, $B$, and direction of propagation are mutually perpendicular.

Answer 1

The Correct Option is B

Step 1: Nature of EM waves.
Electromagnetic waves consist of oscillating electric and magnetic fields.
Step 2: Orientation.
These fields are perpendicular to each other and also perpendicular to the direction of propagation.
Step 3: Conclusion.
Hence, EM waves are purely transverse.