Question

The wavelength of sound in air is 10 cm Its frequency is (Take velocity of sound $=330m{s}^{-1})$

• A. $3.3kHz$
• B. $330mHz$
• C. $330Hz$
• D. $3\times 10^{9}Hz$

Answer 1

Answer: (A)

$\lambda =10cm,v=330m/s$
$\Rightarrow v=\frac{v}{\lambda }$
$=\frac{330m/s}{0.1m}=3300Hz$
$=3.3kHz$