Question

The speed of a wave is 340 $m{s}^{-1}$. What is the wavelength of the wave of its frequency is 500 Hz ?

• A. 0.68 m
• B. 6.8 m
• C. 68 m
• D. 0.068 m

Answer 1

The correct option is A 0.68 m

the relation between frequency and wavelength is

$n=\frac{v}{\lambda }$

(v is velocity, n is frequency and T is time-period)

so wavelength is $\lambda =\frac{340}{500}=0.68$

so the answer is A.