## Answers

**It is given that,**

**Velocity (v) of sound = 339 m/s**

**Wavelength (λ) = 1.5 cm = 0.015 m**

**Frequency (ν) =?**

**We know that, speed = wavelength X frequency**

**⇒340 m/s = 0.015 m X frequency**

**⇒ Frequency = 340 m/s / 0.015 m = 22666.66 Hz**

**⇒ Frequency = 22666.66 Hz.**

**Hence the freq. is beyond 20000 Hz so it is not audible..**

**velocity of sound = 339 m/s****wavelength = 1.5 cm = 0.015 m**

**frequency =?**

**We know that**

**speed = wavelength * frequency**

**340 m/s = 0.015 m * frequency**

**frequency = 340 m/s / 0.015 m = 22666.66 Hz**

**frequency = 22666.66 Hz.**

**since the**** frequency is more 2kHz **

**so it is inaudible..**

**i hope it helps.... **