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`        A particle on a stretched string supporting a travelling wave, takes 5.0 ms to move from its mean position to the extreme position. The distance between two consecutive particles, which are at their mean positions, is 2.0 cm. Find the frequency, the wavelength and the wave speed. `
3 years ago

Jitender Pal
365 Points
```										Sol. Time period, T = 4 * 5 ms = 20 * 10–3 = 2 * 10–2 s
λ = 2 * 2 cm = 4 cm
frequency, f = 1/T = 1/(2 * 10–2) = 50 s–1 = 50 Hz
Wave speed = λ f = 4 * 50 m/s = 2000 m/s = 2 m/s

```
3 years ago
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