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COMEDK2023PhysicsWave Optics

In Young's double slit interference experiment, using two coherent waves of different amplitudes, the intensities ratio between bright and dark fringes is 3 . Then, the value of the ratio of the amplitudes of the wave that arrive there is

Options

  1. A( 3 +1 3 -1 )
  2. B( 3 -1 3 +1 )
  3. C3 : 1
  4. D1: 3

Correct answer

A. ( 3 +1 3 -1 )

Step-by-step solution

aligned & Here, I_ bright I_ dark = I_ I_ =3 (given) & (a₁+a₂ )^2 (a₁-a₂ )^2 = 3 1 a₁+a₂ a₁-a₂ = 3 & a₁+a₂= 3 (a₁-a₂ ) a₁ a₂ = ( 3 +1 3 -1 ) aligned

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