Physics · A-Level · AQA · AQA A-level Physics (7408) · Specification point · 3.3.1.3 · Waves · Progressive and stationary waves
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3.3.1.3 Principle of superposition of waves and formation of stationary waves
| Content | Opportunities for skills development |
|---|---|
Stationary waves. Nodes and antinodes on strings. for first harmonic. |
The formation of stationary waves by two waves of the same frequency travelling in opposite directions.
A graphical explanation of formation of stationary waves will be expected.
Stationary waves formed on a string and those produced with microwaves and sound waves should be considered.
Stationary waves on strings will be described in terms of harmonics. The terms fundamental (for first harmonic) and overtone will not be used.
MS 4.7 / PS 1.2, 2.1 / AT i Students can investigate the factors that determine the frequency of stationary wave patterns of a stretched string. |
Required practical 1: Investigation into the variation of the frequency of stationary waves on a string with length, tension and mass per unit length of the string. |