In the system shown, the wire connecting two masses has linear mass density of 1 / 20 kg/m. A tuning fork of 50 Hz is found to be in resonance with the horizontal part of wire between pulley and block A. (Assuming nodes at block A and pulley). Now at t = 0, system is released from rest. The ratio of time gap between successive resonance with the same tuning fork starting from t = 0. (take g = 10 m/s2 )
(A) 2 : 1
(B) 1 : 2
(C) 1 : √2 - 1
(D) 1: √2