Question

Electromagnetic waves are called transverse waves. Why

Answer 1

as they are only straight inside magnet but at outside they are in wave form that's why they are transverse waves

Answer 2

All types of electromagnetic radiation, including visible light, are transverse waves waves. In transverse waves the vibrations are at right angles to the direction of travel, as seen in the animation below of a wave sent down a piece of string.

Transverse Nature of Electromagnetic Waves. In an electromagnetic wave, electric and magnetic field vectors are perpendicular to each other and at the same time are perpendicular to the direction of propagation of wave.