If the tension in a string is increased by `21` percent, the fundamental frequency of the string changes by `15 Hz`. Which of the following statements
If the tension in a string is increased by `21` percent, the fundamental frequency of the string changes by `15 Hz`. Which of the following statements will also be correct?
A. The original fundamental frequency is nearly `150 Hz`
B. The velocity of propagation changes nearly by `4.5%`
C. The velocity of propagation changes nearly by `10%`
D. The fundamental wavelength changes nearly by `10%`
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Correct Answer - A::C
`V prop sqrt(T)`
`f prop sqrt(T)`
`(t)/(f + 15) = ((T)/(T + (21T)/(100)))^(1/2) = (10)/(11)`
`11f = 10f + 150`
`f = 150 Hz`
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