Question

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

Answer 1

Answer:

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

Answer 2

Answer:

The speed can be calculated using the formula: speed (v) = wavelength (λ) x frequency (f). ⇒ v = 400 m/s. Hence option 1 is correct.

Hope it's correct