Question

Sound from a source vibrating at frequency 200 Hz travels at speed of 300 m/s in air. Wavelength of the sound is

Answer 1

Speed = frequency * wavelength
Wavelength =300/200=1.5 m

Answer 2

As we know velocity of wave = Frequency * Wavelength
Here velocity = 300m/s
Frequency = 200Hz = 200s^-1
So wavelength = velocity/frequency
wavelength = 300/200 m = 1.5m is the wavelength.