Answers

2016-02-25T20:07:32+05:30
1 min---->80 beats
i.e., 60 sec---->80 beats

therefore, 1s--->80 / 60
                         =1.3

therefore,frequency is 1.33Hz....
2 4 2
2016-02-25T21:59:44+05:30
No. of beats=No. of vibration=80
Time=1min=60 sec
Frequency=Vibration÷ Time
=80÷60
=4÷3
=1.33Hz
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