A person has a hearing range from 20 Hz to20 kHz. The speed of sound i

1.	A person has a hearing range from 20 Hz to20 kHz. The speed of sound in air is344 ms–1. The typical wavelengths of soundwave in air corresponding to these twofrequencies are respectively
Answer» Answer: For a SOUND WAVE, Speed = WAVELENGTH x Frequency v = Î» x f Speed of sound in air = 344 m/s (Given) (i) For, f = 20 Hz Î»1= v/f = 344/20 = 17.2 m (ii) For, f= 20000 Hz Î»2= v/f = 344/20000 = 0.172 m Hence, for humans, the wavelength range for hearing is 0.0172 m to 17.2 m. Hope this is helpful for you.

A person has a hearing range from 20 Hz to20 kHz. The speed of sound in air is344 ms–1. The typical wavelengths of soundwave in air corresponding to these twofrequencies are respectively

Answer»

Answer:

For a SOUND WAVE,

Speed = WAVELENGTH x Frequency

v = Î» x f

Speed of sound in air = 344 m/s (Given)

(i) For, f = 20 Hz

Î»1= v/f = 344/20 = 17.2 m

(ii) For, f= 20000 Hz

Î»2= v/f = 344/20000 = 0.172 m

Hence, for humans, the wavelength range for hearing is 0.0172 m to 17.2 m.

Hope this is helpful for you.