The speed of wave in a medium is $60\text{ m/s}$. If $1200$ waves are passing through a point in the medium…
The speed of wave in a medium is $60\text{ m/s}$. If $1200$ waves are passing through a point in the medium in $1\text{ min}$, then wavelength is
- $4.0\text{ m}$
- $6.0\text{ m}$
- $3.0\text{ m}$
- $7.0\text{ m}$
Solution
Speed the wave, $v = 60\text{ ms}^{-1}$
Frequency of the wave, $\nu = 1200\text{ min}^{-1} = \frac{1200}{60} = 20\text{ s}^{-1}$
Now, wavelength, $\lambda = \frac{v}{\nu} = \frac{60}{20} \Rightarrow \lambda = 3\text{ m}$
Practice more Waves and Sound questions on Aicharya