Igcse Model Questions Vol1 2025 Physics Question 31
Practice objective / multiple choice question 31 from the 2025 Igcse Model Questions Vol1 Physics examination.
A string 0.8 m long and fixed at both ends has a mass per unit length of \(0.005\,\text{kg m}^{-1}\). When the tension in the string is \(T_{1}\), the fundamental frequency is \(120\,\text{Hz}\). The tension is then increased, and the frequency of the third harmonic becomes \(540\,\text{Hz}\). (a) Determine the new tension \(T_{2}\). (b) Find the wavelength of the third harmonic under the new tension.
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This is Igcse Model Questions Vol1 2025 Physics Question 31. It is one of the objective questions from the 2025 Igcse Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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