CAPE Physics Unit 1 · 2009 · Paper 1 · Question Q19

Stationary waves are produced by superimposing progressive waves of frequency 500\text{ Hz}. Successive nodes are separated by a distance of 2\text{ m}. What is the speed of the progressive waves?

1. (A)125\text{ m s}^{-1}
2. (B)250\text{ m s}^{-1}
3. (C)1\,000\text{ m s}^{-1}
4. (D)2\,000\text{ m s}^{-1}