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Figure 10 shows a displacement-distance graph for a certain wave motion. Displacement (cm)
(i) Indicate on the figure with letters A and B any two points that are in phase. (1 mark)
(ii) Determine the :( 1 marks) (I) amplitude of the wave (1 marks)
(II) Wavelength of the wave (1 marks)
(iii) Given that the frequency of the waves is 50 Hz, determine the: (I) period (1 marks) (II) Speed of the wave (3 marks (KCSE 2018 paper 2 question 19(c)