If fundamental frequency is 50Hz and next succesive frequencies are 150Hz and 250Hz, then which of the following options correctly represents the state of the string?
A
String fixed at both end
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B
String fixed at one end & free at other
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C
String may be fixed at one end as well as at both ends
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D
None of the above
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Solution
The correct option is B String fixed at one end & free at other We know that in case of sting fixed at one end and free at other end. f=(n+12)V2L
So, frequencies of vibration are fo,3fo,5fo,.........
Where fo=V4L is fundamental frequency. ∴ Option (b) is correct.