Two identical guitar wires have a fundamental frequency of 600 Hz, when kept under the same tension. The tension in a wire can be increased by tightening the tuning keys. During the tightening process, length of vibrating section of wire remains same. What percentage increase in the tension of one of the wires will lead to six beats per second when they are sounded together?
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A string of length 1 m and mass 10 gm is tightly clamped at its ends. The tension in the string is 4 N. Identical wave pulses are produced at one end at equal intervals of time t. What is the minimum value of t (in sec.) which allows a constructive interference between successive pulses?
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