Beats

Question 1

Condition for formation of distinct beats

Answer 1

Difference in the frequencies should be less than 10Hz

Question 2

If sound is linear then l=?

Answer 2

P/(2||/d)

Question 3

Beta =?

Answer 3

10 log(I/I•)

Where I•= 10^-12 Wm^2 at 1kHz