This is in the 2nd harmonic
The wavelength of the harmonic is λ=66
Explanation:
Given data
length= 66cm antinodes= 2
1.To find the harmonic
We have the formula,
No of antinodes= No of harmonic
2=2
This is in the 2nd harmonic
2.The wavelength of the harmonic
We have the formula,
λ=2L/n=2 66/2
λ=66
The wavelength of the harmonic is λ=66
