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four choices have been provided. Select the correct alternative.
Arrange the following steps in a sequential order to prove the law of length in vibrating stretched strings.
(A) At a particular length β„“_1, the wire between the bridges vibrates with maximum amplitude and this is confirmed by the flying away of a small paper rider placed on the string.
(B) Excite a tuning fork of frequency ' n_1 ' and keep it on the sonometer table between the bridges and adjust the distance between the bridges (from minimum to maximum).
(C) The first law of vibrating stretched strings is verified by showing n_1β„“_1=n_2β„“_2.
(D) The procedure is repeated by taking another tuning fork of frequency ' n_2 ' and the resonating length ' β„“_2 ' is obtained.
(a) BADC
(b) ABCD
(c) BCAD

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