Question

The phase change between incident and reflected sound wave from a free end is

• A. $0$
• B. $\pi$
• C. $3\pi$
• D. $2\pi$

Answer 1

Answer: (A)

$0$

At a free and, the wave is reflected as it is with just as change in its direction of propagation
$y=A\sin (\omega t+kx)$
$y_r=A\sin (\omega t-kx)$
phase difference in time domain $=0$