Question

the wavelength of a wave when its time period is 2 seconds and velocity is 330 metre per second is

Answer 1

From information sufficient we get to know that frequency is the inverse of time period.

So f = 1 / t = 1 / 2 = 0.5 s^-1 or Hertz.

Now we have formulae that

frequency = velocity / wavelength

0.5 = 330 / wavelenght

wavelenght = 330 / 0.5 = 660m


Hope it helps!