Question

What is the wavelength of a 256-hertz sound wave in air at STP?

A: 1.17 x 10⁶ m
B: 1.29 m
C: 0.773 m
D: 8.53 x 10⁻⁷ m

Answer 1

V = 331 m/s speed of sound in dry air

λ = V / f = 331 m/s / 256 / s = 1.29 m

(B) is correct