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AP EAMCET202125 Aug 2021Evening ShiftPhysicsWave OpticsActual

In a double slit experiment, when the distance between slits is increased 10 times, while their distance from the screen is halved, then the fringe width

Options

  1. Abecomes ( 1 20 ) times the original
  2. Bbecomes ( 1 90 ) times the original
  3. Cremains the same
  4. Dbecomes ( 1 10 ) times the original

Correct answer

A. becomes ( 1 20 ) times the original

Step-by-step solution

Case 1 Fringe width, ₁= D₁ d₁ Case 2 Fringe width, ₂= D₂ d₂ array ll Given, d₂= & 10 d₁, D₂= D₁ 2 & ₁ ₂ = D₁ d₁ d₂ D₂ & ₁ ₂ = D₁ D₂ d₂ d₁ =2 10 & ₁ ₂ =20 & ₂= 1 20 ₁ array

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