Question

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string at that instant is

• A. Sinusoidal shape with amplitude $A/3$
• B. Sinusoidal shape with amplitude $A/2$
• C. Sinusoidal shape with amplitude $A$
• D. Straight line

Answer 1

Answer: (B)

Sinusoidal shape with amplitude $A/2$

Since sum of K.E and P.E remains conserved during the motion and potential energy is minimum at mean position.Hence,

particles have kinetic energy maximum at mean position