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NEET2014PhysicsOscillationsActual

Two waves represented by y=a ( t-k x) and y=a ( t-k x) are superposed. The resultant wave will have an amplitude

Options

  1. Aa
  2. B2 a
  3. C2 a
  4. Dzero

Correct answer

B. 2 a

Step-by-step solution

Given, y=a ( t-k x) and y=a ( t-k x) Here, the phase difference between the two waves is 2 . So, the resultant amplitude, A= a₁^2+a₂^2+2 a₁ a₂ Here a₁=a, a₂=a, = 2 A= a^2+a^2+2 a^2 2 or A= a^2+a^2+0 A= 2 a

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