Question

In open pipes, the positions of antinodes are obtained at ___

• A. $0,\frac{\lambda}{2},2\lambda$
• B. $0,\frac{\lambda}{2},\lambda$
• C. $\frac{\lambda}{4},\frac{3\lambda}{4},\lambda$
• D. $\frac{5\lambda}{4},\frac{3\lambda}{4}$

Answer 1

Answer: (B)

In open pipes, position of antinodes is $\frac{ n \lambda}{2}$
Putting vales of $n$ as $o , 1,2$ we get position as $0, \lambda / 2, \lambda$