Question

A 440 Hz sound wave travels with a speed of 340 m s${}^{-1}$. The wavelength of the wave is :

• A. $1.5\times {10}^{5}m$
• B. 0.77 m
• C. 1.4 m
• D. 1.1 m

Answer 1

The correct option is B 0.77 m

$v=440Hz$
$V=340m{s}^{-1}$
$\lambda =\frac{V}{v}=\frac{340}{440}=0.77m$