Question

four students a,b,c and d in a group take 6m long slinky and produce a longitudinal wave, they observe that in10 sec ,4 waves completed. on these observation the speed of wave in slinky is (a)4.8m/s (b)6.4m/s (c) 7.2m/s (d) 9.6m/s

Answer 1

I think it should be a)4.8m