Class 11 NEET Physics Waves Questions Questions

5 beats/sec =100 and frequency of second source with 5 beats /sec=205. The frequency of the first source =100±5=105 or 95Hz.
Therefore frequency of second harmonic source =210Hz or 190Hz.
As the second harmonic gives 5 beats/second with the sound of frequency 205Hz, therefore frequency of second harmonic source should be 210Hz. The frequency of source =105Hz