Question

Beats are produced by two waves given by `y_(1)= a sin 2000 pi t` and `y_(2) =a sin 2008 pi t `. The number of beats heard per second is

Answer 1

Correct Answer - C
`omega_(1) = 2000pi, omega_(2) = 2008pi`
`2pi n_(2) = 2000pi, 2pi n_(2) = 2008pi`
`n_(1) = 1000, n_(2) = 1004`
`n_(2) - n_(1) = n`
`1004 - 1000 = n`
`n = 4`