80 Hertz $$\lambda=\frac{c}{f}$$  

(a)  

115 Hertz $$\lambda=\frac{c}{f}$$  

(a)  

250 Hertz $$\lambda=\frac{c}{f}$$  

(a)  

630 Hertz $$\lambda=\frac{c}{f}$$  

(a)  

1250 Hertz $$\lambda=\frac{c}{f}$$  

(a)  

4000 Hertz $$\lambda=\frac{c}{f}$$  

(a)  

8000 Hertz $$\lambda=\frac{c}{f}$$  

(a)  

17000 Hertz $$\lambda=\frac{c}{f}$$  

(a)  

20000 Hertz $$\lambda=\frac{c}{f}$$  

(a)