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`        Calculate the frequency of beats produced in air when two sources of sound are activated, one emitting a wavelength of 32 cm and the other of 32.2 cm. The speed of sound in air is 350 m s-1.`
3 years ago

396 Points
```										Sol. Given length of the closed organ pipe, l = 40 cm = 40 × 10^–2 m
V base air = 320
So, its frequency p = V/4 l = 320/4 * 40 * 10^-2 = 200 Hertz.
As the tuning fork produces 5 beats with the closed pipe, its frequency must be 195 Hz or 205 Hz.
Given that, as it is loaded its frequency decreases.
So, the frequency of tuning fork = 205 Hz.

```
3 years ago
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