Two sound of very close frequencies say 256 Hz and 260 Hz are produced simultaneously. What isw the frequency of resultant sound and also write the number of beats heard in one second ?

Explanation

Frequency of resultant sound
`v_(av)=(v_(1)+v_(2))/(2)=(256+260)/(2)`
`=258 Hz`
`:. {:("Number of beats"),("heard in one second"):}}=260-256=4`