Question

A natural horn (trumpet with no valves) is similar to a pipe open at both ends. A musician plans to create a fundamental frequency of 256 Hz (middle C) using the horn.

If sound travels at 350 m/s, what must be the length of this horn?

A) 0.34 m 

B) 0.68 m 

C) 0.78 m 

D) 1.36 m 

E) 1.46 m

Answer 1

The correct option is: (B) 0.68 m 

Explanation:

with n = 1, solve for L