Question

A certain sound wave in air has a speed 340 m/s and wavelength 1.7 m for this wave, calculate 

(i) the frequency 

(ii) the period.

Answer 1

Given : v = 340 m/s, λ = 1.7 m 

To find : frequency (n), period (T) 

Formulae :

i. n = v/λ

ii. T = 1/n

Calculation: From formula, (i)

…….. (using reciprocal Table) 

∴ T = 0.005 s