#### Two sounding bodies producing progressive wave given by  are situated very near to the ears of a person who will hear Option 1) 2 beats per second with intensity ratio (4/3) between maxima and minima Option 2) 2 beats per second with intensity ratio (49/1) between maxima and minima Option 3) 4 beats per second with intensity ratio (7/1) between maxima and minima Option 4) 4 beats per second with intensity ratio (4/3) between maxima and minima

As we learnt in

Beat Frequency -

module of

- wherein

Where are frequency of two wave differ slightly  in value of frequency.

Beat frequency

Ratio of Intensity maxima and minima

In the second equation

first equation

Option 1)

2 beats per second with intensity ratio (4/3) between maxima and minima

This option is incorrect.

Option 2)

2 beats per second with intensity ratio (49/1) between maxima and minima

This option is correct.

Option 3)

4 beats per second with intensity ratio (7/1) between maxima and minima

This option is incorrect.

Option 4)

4 beats per second with intensity ratio (4/3) between maxima and minima

This option is incorrect.