Two pulses in a stretched string whose centres are initially 8 \( \...

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Two pulses in a stretched string whose centres are initially 8 \( \mathrm{cm} \) apart are moving towards each other as shown in the
\( \mathrm{P} \) figure. The speed of each pulse is \( 2 \mathrm{~cm} / \mathrm{s} \). After 2 seconds, the total energy of the pulses will be
W
[IIT-JEE (Screening) 2001]
(a) Zero
(b) Purely kinetic
(c) Purely potential
(d) Partly kinetic and partly potential
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