Question

The wavelength of sound is $1.7\times {10}^{-2}m$ .Calculate the frequency of sound.(velocity of sound is $v=343.3$ m/s)

Answer 1

As we know

$v=\lambda f,wherev=velocityofsound,\lambda =wavelength,f=frequency$

$given;\lambda =1.7\times {10}^{-2}m,v=343.3\frac{m}{s}$

$sol;$

$\because v=\lambda f$

$f=\frac{v}{\lambda }\Rightarrow \frac{343.3}{1.7\times {10}^{-2}}\Rightarrow 201.94\times {10}^{2}hz$

Therefore the correct answer should be $201.94\times {10}^{-2}hz$