Question

9.
The fundamental note produced by a closed organ
pipe is 100 Hz. The fundamental note produced by
an open organ pipe of same length will be of
frequency
​

Answer 1

Answer: 200Hz

Explanation:

For same length,

Frequency of open organ pipe=2×frequency of closed organ pipe

n(open)=2×n(closed)

n(open)=2×100

n(open)=200 Hz

Or else

Follow attachment... hope it helps..