Question

In the case of standing waves in organ pipe, the value of $\frac{\partial y}{\partial x}$ at the open end is

• A. $>0$
• B. $<0$
• C. $=0$
• D. $noneofthese$

Answer 1

The correct option is C $=0$

$\frac{\vartheta y}{\vartheta x}=0$ because pressure should be minimum at that point . i.e. at open end that's why $\frac{\vartheta y}{\vartheta x}=0$.