Two vibrating tuning forks produce waves given by y1=4sin500πt and y2=2sin506πt. Number of beats produced per minute is
A
360
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B
180
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C
60
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D
3
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Solution
The correct option is B180 Given y1=4sin500πt,y2=2sin506πt ω1=500π,ω=2πν,ν1=250,ω2=506πν2=253
Beat frequency ν=ν2−ν1=253−250=3beats/s.
Number of beats per minute =3×60=180
Hence, the correct answer is option (b).