Q. A pulse or a wave train travels along a stretched string and reaches the fixed end of the string. It will be reflected back with
A) The same phase as the incident pulse but with velocity reversed
B) A phase change of 180°with no reversal of velocity
C) The same phase as the incident pulse with no reversal of velocity
D) A phase change of 180° with velocity reversed
Explanation
(d) On reflection from fixed end (denser medium) a phase difference of π is introduced and velocity is reversed.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.