Two pulses are travelling along a string...

Two pulses are travelling along a string in opposite directions towards each other as shown in the figure. If the wave velocity is `2cm//s` and the pulses are 6 cm apart, then after `1.5 sec`, the energy stored in the string will be (Assume shapes of pulses to be similar)

kinetic energy only

potential energy only

kinetic energy as well as potential energy

none of these

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The correct Answer is:

The string will be straight at this instant. All the particles of medium will be passing though their mean positions. There will be no stretching in the string.

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