Year: 2014
Topic: Waves
Time :
1. If n1, n2, and n3 are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequency n of the string is given by
(1). \(\frac{1}{n} = \frac{1}{n_1} + \frac{1}{n_2} + \frac{1}{n_3}\)
(2). \(\frac{1}{\sqrt{n}} = \frac{1}{\sqrt{n_1}} + \frac{1}{\sqrt{n_2}} + \frac{1}{\sqrt{n_3}}
(3). \(\sqrt{n} = \sqrt{n_1} + \sqrt{n_2} + \sqrt{n_3}
(4). \(n = n_1 + n_2 + n_3