Question

A wire of linear mass density 9 x 10-3 kg/m is stretched
between two rigid supports under a tension of 360 N.
The wire resonates at frequency 210 Hz. The next
higher frequency at which the same wire resonates is
280 Hz. The number of loops produced in first case
will be
(1) 1
(2)2
(3)3
(4)4​

Answer 1

Explanation:

the answer is given in above pic