A steel wire of length 40 cm and diameter 0.25 mm vibrate in unison with a tube open at both ends and of effective length 60 cm, when each is sounding its fundamental notes. The air temperature is 27 0 C. Find the tension in the wire. Given – velocity of sound in air at 0 0 C = 332 m/s and density of steel = 7800 kg/m 3 .
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