Question

Select One Option Correct from the following : Two pulses in a stretched string, whose cen- tres are initially 8 cm apart, are moving towards each other as shown in the figure. The speed of each pulse is 2 cm/s. After 2 s the total energy of the pulses will be
(A) zero.
(B) purely kinetic.
(C) purely potential.
(D) partly kinetic and partly potential.

Answer 1

d option is correct I think
mark me.

Answer 2

Select One Option Correct from the following : Two pulses in a stretched string, whose cen- tres are initially 8 cm apart, are moving towards each other as shown in the figure. The speed of each pulse is 2 cm/s. After 2 s the total energy of the pulses will be

(A) zero.

(B) purely kinetic.

(C) purely potential.

,✔️(D) partly kinetic and partly potential.