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COMEDK2019PhysicsWaves and Sound

If two waves of the same frequency and amplitude respectively on superposition produce a resultant disturbance of the same amplitude the waves differ in phase by

Options

  1. A/ 3
  2. B2 / 3
  3. Czero

Correct answer

B. 2 / 3

Step-by-step solution

Given that, amplitude and frequency of two waves are same. Hence, resultant amplitude due to superposition of two waves with phase difference is given by aligned A² &=A₁²+A₂²+2 A₁ A₂ A² &=A²+A²+2 A² & A²=2 A²+2 A² aligned aligned & & &= -1 2 & & &= 2 3 aligned

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