## College Physics (4th Edition)

The correct answer is: (f) $\frac{3L}{2}$
The wavelengths of the standing waves have this form: $\lambda_n = \frac{2L}{n}$ All of the choices can be written in this form except for $\frac{3L}{2}$ The correct answer is: (f) $\frac{3L}{2}$