Question

A A wave form is shown in fig, it the waves make
20 Oscillations in 5 sec then find out its
I)Amplitude ii) Wave length iii) Time Period
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Answer 1

Their wavelength is given by λ = v/f. Since the frequency is fixed, the wavelength of the waves can only be changed by changing the speed of the waves. Students will adjust the tension in the string until 1, 2, or 3 half wavelength of a wave with f = 120 Hz fit into the length of the string.

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