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

Options

A. 180
B. 3
C. 630
D. 60

Answer

A

Explanation

`y_(1)= 4 sin 500 pit`,
`y_(2)= 2 sin 506 pit`
`omega_(1)=2piv_(1)=500 pi`
`:.v_(1)=250 Hz`
`omega_(2)=2 pi v_(2)=506 pi`
`:.v_(2)=253 Hz`
Beat frequency `=v_(2)-v_(1)=3` beats
Number of beats produced per minute.