Question

A wavelength of sound emitted by a source is 1.7×10–²m. Calculatefrequency of sound, if it's velocity is 343.4m/s.

Answer 1

Given wavelength λ=1.7*10-²
  V=343.4m/s
υ=?
formula is V=υλ
or υ=V/λ
υ=343.4/1.7*10-²
υ=202*10² Hz⁹

Answer 2

$\huge\star\sf\underline\pink{Solution :-}$

We have,

$\sf{ Velocity (v) = 343.4 \:ms^{-1} } \\ \\ \sf{ wavelength (\lambda) = 1.7 \times 10^{-2} m} \\ \\ \\ \sf\underline\red{To\:Find:-} \\ \\ \: \: \: \: \bullet\sf{Frequency (f) = ?}$

$\sf\underline\red{Formula:-} \\ \\ \\ \huge\star\green{\boxed{\sf{ v = \</p><p> f \times \lambda }}}$

So,

We have to Enter the same data given above into the Formula to get exact values,

$\implies\sf{ 343.4 = f \times 1.7 \times 10^{-2} } \\ \\ \\ \implies{\sf{ f= \dfrac{343.4}{1.7 \times 10^{-2}} }} \\ \\ \\ \implies{\sf{ f = \dfrac{343.4 \times 10^2}{17} }} \\ \\ \\ \implies\sf{ f = 2.02 \times 10^4 \: Hz}$

Thus,

The Frequency of Sound is 2.02 × 10⁴ Hertz.