The waves that occur when the motion of the medium is at right angles to the direction of the wave are called transverse waves.

Here's a breakdown:

* Transverse waves: In these waves, the particles of the medium move perpendicular to the direction the wave travels. Imagine shaking a rope up and down - the wave travels horizontally along the rope, but the individual segments of the rope move up and down (perpendicular).

Here are some examples of transverse waves:

* Light waves: Light is a transverse electromagnetic wave, meaning the electric and magnetic fields oscillate perpendicular to the direction of the wave.

* Water waves: While water waves have a slight longitudinal component, the primary motion of the water molecules is up and down, perpendicular to the wave's direction.

* Waves on a string: As mentioned earlier, shaking a rope up and down creates a transverse wave.

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