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Hrishant Goswami Grade: 10
         A 30.0-cm-long wire having a mass of 10.0 g is fixed at the two ends and is vibrated in its fundamental mode. A 50.0-cm-long closed organ pipe, placed with its open end near the wire, is set up into resonance in its fundamental mode by the vibrating wire. Find the tension in the wire. Speed of sound in air = 340 m s-1.
3 years ago

Answers : (1)

Jitender Pal
askIITians Faculty
365 Points
										Sol. We know that f ∝√T

According to the question f + ∆f ∝ √∆T + T
⇒ f + ∆f/f = √∆t + T/T ⇒ 1 + ∆f/f = (1 + ∆T/T)^1/2 = 1/2 ∆T/T + ….(neglecting other terms)
⇒ ∆f/f = (1/2) ∆T/T.
3 years ago
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