Figure (15-E7) shows two wave pulses at t = 0 travelling on a string in opposite directions with the same wave


speed 50 cm s1. Sketch the shape of the string at t = 4 ms, 6 ms, 8 ms, and 12 ms.


We know that travelled distance by any classical wave follows,



So, in each case,


T=4 ms


T=6 ms


T=8 ms


T=12 ms


The sketch is given:



1