Answer:
(a) 0.0165 m
(b) 16.5 m
Explanation:
Applying,
v = λf.................. Equation 1
Where v = velocity, f = frequency, λ = wave length.
make λ the subject of the equation
λ = v/f............. Equation 2
(a) Shortest wavelength (λ')
Given: f' = 20000 Hz, v = 330 m/s
Substitute these values into equation 2
λ' = 330/20000
λ' = 0.0165 m
(b) Longest wavelength (λ)
Given: v = 330 m/s, f = 20 Hz
Substitute these value into equation 2
λ = 330/20
λ = 16.5 m
