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IIT JEE Advanced 2010 Paper 2

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Question : 6

Total: 57

A hollow pipe of length 0.8 m is closed at one end. At its open end, a 0.5-m long uniform string is vibrating in its second harmonic and it resonates with the fundamental frequency of the pipe. If the tension in the wire is 50 N and the speed of sound is 320 ms−1, the mass of the string is

5 g
10 g
20 g
40 g

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