Question

find the frequency of the string of it produces 1 vibration in 1/30 second​

Answer 1

Answer:

2 min = 120 sec f= n /t=30 120 = 1/4

Explanation:

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Answer 2

(i) Frequency of vibration is defined as number of vibration per second ,

   so ,  frequency , f=number of vibrations/time in second      =7200/60=120Hz ,

(ii) Now given , v=360m/s and f=120Hz

     by , v=fλ ,

or               λ=v/f=360/120=3m