An organ pipe, open at both ends produces 5 beats per second. When vibrated with a source of frequency 200 Hz. The second harmonic of the same pipe produces 10 beats per secondwith a source of frequency 420 Hz. The frequency of source is :

An organ pipe, open at both ends produces 5 beats per second. When vib

1.	An organ pipe, open at both ends produces 5 beats per second. When vibrated with a source of frequency 200 Hz. The second harmonic of the same pipe produces 10 beats per secondwith a source of frequency 420 Hz. The frequency of source is :
Answer» 205 Hz 210 Hz 195 Hz 190 Hz Solution :Fundamental FREQUENCY of open pipe, `f=\200+-135 Hz (or) 205 Hz` second harmonic of open pipe. `2f=420+-10=410 Hz (or) 430 Hz` (or) `f=205 Hz (or) 215 Hz` The COMMON frequency is 205 Hz.