In a transverse wave, the particles of the medium move in circles move in ellipses move parallel to the direction of travel of the wave or move perpendicular to the direction of travel of the wave?

Answer 1

In transverse wave medium particles move in the direction perpendicular to the direction of motion of the wave.

For example, when a metal string of a musical instrument is plucked , the wave in string travels along the string whereas medium particles of the string vibrate perpendicular to the length of string.

The sound produced by string travels as longitudinal sound wave in air.