A sound of frequency 512 Hz reaches a listener 100 m away. If the sound travels in air at s.t.p., what is its wavelength?
[speed of sound in air = 331 m/s]
A
1.550m
B
0,646m
C
5.120m
D
0.195m
Verified Correct Answer: B.
Physical Principles & Numerical Solution
f = 512Hz, V = 331m/s \lambda = ?
V = f \lambda
\lambda = \(\frac{v}{f} = \frac{331}{512}\)
\lambda = 0.646m.
Source: Myschool Past Questions Archive (Record #69385)