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(i) Draw the fourth harmonic for a standing wave on a string and label key features including the wavelength of the progressive waves forming the standing wave. (2 marks) The length of the string is 2.4 m and the speed of the progressive waves forming the standing wave is 63 m s. (ii) Calculate the frequency for the fourth harmonic.One student tells another student that all the particles on the string between two adjacent nodes are in phase. Is this statement correct? Yes, it is correct No, it is incorrect