Question

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.
19. _____________________This wave is stronger than visible light but weaker than an x-ray.
20. The frequency of the ultraviolet wave is (stronger or weaker) ________________ than the visible
light.

Answer 1

18. Statements c and d are false.
- Correct: Longitudinal waves move parallel to the disturbance (e.g., sound); transverse waves move perpendicular to the disturbance (e.g., light). a and b are true.

19. Ultraviolet (UV).

20. Stronger — ultraviolet has a higher (greater) frequency than visible light.