Exam-style question
Try this first
How do stationary waves form from two progressive waves?.
- A.By the reflection of waves at a boundary
- B.By the interference of two waves traveling in opposite directions
- C.By the absorption of energy in a medium
- D.By the diffraction of waves around obstacles
Model answer
What a good answer should say
- By the interference of two waves traveling in opposite directions
Explanation
Why this works
Stationary waves are formed when two progressive waves of the same frequency and amplitude travel in opposite directions and interfere with each other, creating nodes and antinodes.
Common mistake
No common mistake is linked to this question yet.