Physics for IGCSE & O level - Waves And Sounds (Section 6 - No. 22)
What happens to a wave's direction as it moves into a different medium and its speed increases?
The wave bends towards the normal.
The wave bends away from the normal.
The wave continues in the same direction.
The wave stops.
Explication
When the speed of a wave increases upon entering a new medium, it bends away from the normal.