Question
A hollow pipe of length 0.8 m is closed at one end. At it's open end a 0.5 m long uniform string is vibrating in it's second harmonic and it resonates with the fundamental frequency of the pipe. If the tension in the wire is 50 N and the speed is 320 m/s, the mass of the string is 1) 5 g 2) 10 g 3) 20 g 4) 40 g