State any four properties of electromagnetic waves.

Explanation

**Step-by-Step Solution:**

1. **Electromagnetic Waves Do Not Require a Medium:**
Electromagnetic waves can propagate through a vacuum as well as through various media. This means they do not need a physical medium (like air or water) to travel, unlike sound waves which require a medium.

2. **Transverse Nature of Electromagnetic Waves:**
Electromagnetic waves are classified as transverse waves. This means that the oscillations of the electric and magnetic fields are perpendicular to the direction of wave propagation.

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