A sound wave has a frequency of 200 hertz and the wave length 2m find the speed of the sound wave.​

As frequency is 200Hz, that means 200 waves are produced on one second.

So, time taken to produce 150 waves =

200

150

=0.75s

Velocity of wave = Frequency × Wavelength =200×1580=30000 cmps =300 meters per second

So, Distance =300×0.75=225cmeters