Two pulses in a stretched string whose centres are initially 8 cm apar – McqOptions

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1.	Two pulses in a stretched string whose centres 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 seconds, the total energy of the pulses will be [IIT-JEE (Screening) 2001]
A.	Zero
B.	Purely kinetic
C.	Purely potential
D.	Partly kinetic and partly potential
Answer» C. Purely potential

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