question_answer 12)

(i) For the wave on a string described in Q. 11 above, do all the points on the string osculate with the same (a) frequency, (b) phase, (c) amplitude ? Explain your answers, (ii) What is the amplitude of a  point 0.375 m away from one end ?  

Answer:

All the points on the string (i) have the same frequency except at the nodes (where frequency is zero) (ii) have the same phase everywhere in one loop except at the nodes. However, the ampltiude of vibration at different points is different. From      the amplitude at x (= 0.375 m) is = 0.06 sin