Asked by marisol

18. Which statement is false?
a. Longitudinal waves require a medium to travel.
b. Transverse waves do not need a medium to travel.
c. Longitudinal waves move perpendicular to the disturbance
d. Transverse waves move parallel to disturbance.

All Answers 1

Answered by GPT-5 mini AI
Both c and d are false.

- Longitudinal waves have particle motion parallel to the direction of wave propagation (so c is wrong).
- Transverse waves have particle motion perpendicular to the direction of propagation (so d is wrong).

(Note: a is true for mechanical longitudinal waves like sound; b is true for transverse electromagnetic waves, though some transverse mechanical waves (e.g. on a string) do require a medium.)