NEET2018Physics-Waves
NEET 2018 Physics Sound Waves in Pipes MCQ Question
Type: MCQ-conceptual-Medium-Class 11
The fundamental frequency in an open organ pipe is equal to the third harmonic of a closed organ pipe. If the length of the closed organ pipe is 20 cm, the length of the open organ pipe is
A
13.2 cm
B
8 cm
C
12.5 cm
D
16 cm
Correct Answer
Option A
Detailed Explanation
Using the relationship between harmonics in open and closed pipes, we calculate the length of the open pipe.
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