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Grade: 12th Pass
        

Three resonant frequencies of string are 90, 150 and 210 Hz. If the length of the string is 80 cm, what is the speed of the transverse waves in the string ?

7 years ago

Answers : (1)

TANAYRAJ SINGH CHOUHAN
65 Points
							

The fundamental frequency of the string = H.C.F of resonant frequencies

    i.e.                            frequency(n)    = 30 Hz

 Now by the formula

                                             n = v/2l    (l = .8m)

                                             v = n x 2l

                                                = 30 x 2x.8

                                                = 48m/s

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7 years ago
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