# Question d4159

Given fundamental frequency of standing wave formed $n = 202 H z$
Velocity of sound , we know $v = 343.4 \frac{m}{s}$
Wave length $\lambda = \frac{v}{n} = \frac{343.4}{202} = 1.7 m$
Length of the tube $L = \frac{\lambda}{2} = \frac{1.7}{2} = 0.85 m$