Answer:
- The lowest possible value of the length L1 = 0.45/2
L1 = 0.225m
- Second lowest possible value
L2 = 0.45m
- Third lowest possible value
L3 = 3(0.45)/2
L3 = 0.675m
Explanation:
Before calculating the length of the resonance tube, we need to know the wavelength produced by the wave.
Using the expression
v = Foλ
V is the velocity of wave
Fo is the resonance frequency
λ is the wavelength
From the formula
λ = v/Fo
λ = 343/770
λ = 0.45m
For an open pipe, the first resonant length L1 = λ/2
Second resonant length L2= λ
Third resonant length L3 = 3λ/2
The lowest possible value of the length L1 = 0.45/2
L1 = 0.225m
Second lowest possible value
L2 = 0.45m
Third lowest possible value
L3 = 3(0.45)/2
L3 = 0.675m