1.

Two vibrating tuning forks produce waves given byy_(1) = 4sin 500 pit and y_(2) = 2sin 506 pit . Number of beats produced per minute is

Answer»

360
180
60
3

Solution :`Y_(1) = 4 sin 500 PIT, Y_(2) =2sin 506 pit`
`omega_(1) = 500 pi, therefore omega_(1) = 2piv_(1) rArr v_(1) = 250`, similarly, `v_(2) = 253`
`v=v_(2) -v_(1) = 253 - 250 = 3` beats/s.
Number of beats per MINUTE `=3 XX 60 = 180`.


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