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CGP EDU Academic Team
Published on: August 21, 2026
Two pulses in a stretched string whose centers are initially 8 cm apart are moving towards each other as shown in Figure. The speed of each pulse is 
. After 2 seconds the total energy of the pulses will be
Text Solution
Verified by ExpertsThe correct answer is:
B
After two seconds both the pulses will move 4 cm towards each other. So by their superposition, the resultant displacement at every point will be zero therefore total energy will be purely in the form of kinetic. Half of the particles will be moving upwards and half downwards.
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