Two uniform strings of mass per unit length 𝜇 and 4 𝜇 , and

Two uniform strings of mass per unit length and 4 4 , and length L and 2L, respectively, are joined at point O, and tied at two fixed ends P and Q, as shown in the figure. The strings are under a uniform tension T. If we define the frequency v 0 = which of the following statement(s) is(are)