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Waves — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsWaves1 Mark
MCQ
Two pulses having equal and opposite displacements moving in opposite directions overlap at $t =t_1s.$ The resultant displacement of the wave at $t = t_1s$ is:
  • A
    Twice the displacement of each pulse.
  • B
    Half the displacement of each pulse.
  • ✓
    Zero.
  • D
    Either $(a)$ or $(c).$
✓

Answer

Correct option: C.
Zero.
The displacement due to two pulses will exactly cancel out each other. Thus, there will be no displacement throughout.

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