The speed of a wave in a medium is 650 m / s. If 4000 waves are passing through a point, in the medium in 1.67 min, then its wavelength will be :

Question

The speed of a wave in a medium is 650 m / s. If 4000 waves are passing through a point, in the medium in 1.67 min, then its wavelength will be : (A) 25.16 m (B) 16.25 m (C) 32.50 m (D) 8.25 m

Tardigrade Admin · Accepted Answer

Wavelength is defined as the distance between repeating units of a wave pattern. It is related to frequency and velocity as
Wavelength

\Rightarrow \frac{velocity}{frequency}

Given, Time

t = 1.67 min . = 100 s

Frequency of wave is

n = \frac{4000}{100} = 40

per sec
Wavelength of wave is

λ = \frac{v}{n} = \frac{650}{40} = 16.25 m

Q. The speed of a wave in a medium is 650m/s. If 4000 waves are passing through a point, in the medium in 1.67min, then its wavelength will be :

25.16 m

16.25 m

32.50 m

8.25 m

Wavelength is defined as the distance between repeating units of a wave pattern. It is related to frequency and velocity as Wavelength ⇒ frequency velocity ​ Given, Time t=1.67min.=100s Frequency of wave is n=1004000​=40 per sec Wavelength of wave is λ=nv​=40650​=16.25m

Q. The speed of a wave in a medium is $650 m / s$ . If $4000$ waves are passing through a point, in the medium in $1.67 min$ , then its wavelength will be :