Question
Question: The first overtone of an open organ pipe and the fundamental tone of a closed organ pipe give 5 beat...
The first overtone of an open organ pipe and the fundamental tone of a closed organ pipe give 5 beats per second when sounded together. If the length of the closed pipe is 25 cm, what are the possible lengths of the open organ pipe (Speed of sound in air = 340 m/sec) –
A
90 cm and 100 cm
B
98.5 cm and 101.5 cm
C
100 cm and 103 cm
D
102 cm and 105 cm
Answer
98.5 cm and 101.5 cm
Explanation
Solution
Max. amplitude at antinodes is A1 + A2