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20 tuning forks are arranged in series that each fork given 4 beat per second with the previous one. The frequency of the 20th fork is 3 times that of the first what is the frequency of the first tuning fork. |
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Answer» SOLUTION :Frequencies are arranged in increasing ORDER FREQUENCY of the `P^th` fork is ` n_0=n_1+(p-1)N` `3n_1=n_1+(20-1)xx4 ` `therefore [n=4 ,p=20 ,n_p=3n_1]` `2n_1=19xx4 or n_1=`38hz |
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