Question

A 512-hertz sound wave travels 100 meters to an observer through air at STP. What is the wavelength of this sound wave

Answer 1

A 512-hertz sound wave travels 100 meters to an observer through air at STP. What is the wavelength of this sound wave ?

solution : frequency of sound wave, f = 512 Hz

sound wave travels 100 metres to an observer through air at STP .

we know, at STP { standard temperature and pressure } velocity of sound in air = 330 m/s

now using formula,

velocity of sound = wavelength × frequency

330 m/s = wavelength × 512 Hz

so, wavelength = 330/512 = 0.64 m

hence, wavelength of sound wave is 0.64m