A `75 cm` string fixed at both ends produces resonant frequencies `384 Hz and 288 Hz` without there being any other resonant frequency between these two . Wave speed for the string isA. `144 m//s`B. `216 m//s`C. `108 m//s`D. `72 m//s`

A `75 cm` string fixed at both ends produces resonant frequencies `384

1.	A `75 cm` string fixed at both ends produces resonant frequencies `384 Hz and 288 Hz` without there being any other resonant frequency between these two . Wave speed for the string isA. `144 m//s`B. `216 m//s`C. `108 m//s`D. `72 m//s`
Answer» Correct Answer - A `Delta v = 384 - 288 = 96` Thus ` 288 and 384 (96 xx 3 , 96 xx 4)` are third and fourth harmonics . For fundamental mode : `(lambda)/(2) = 0.75` `lambda = 1.5` `eta = 96` `v = 96 xx 1.5 = 144 m//s`

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A `75 cm` string fixed at both ends produces resonant frequencies `384 Hz and 288 Hz` without there being any other resonant frequency between these two . Wave speed for the string isA. `144 m//s`B. `216 m//s`C. `108 m//s`D. `72 m//s`

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