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AP EAMCET2009PhysicsWave Optics

In Young's double slit experiment, the 10^ th maximum of wavelength ₁ is at a distance of y₁ from the central maximum. When the wavelength of the source is changed to ₂, 5^ th maximum is at a distance of y₂ from its central maximum. The ratio ( y₁ y₂ ) is

Options

  1. A2 ₁ ₂
  2. B2 ₂ ₁
  3. C₁ 2 ₂
  4. D₂ 2 ₁

Correct answer

B. 2 ₂ ₁

Step-by-step solution

Position fringe from central maxima y₁= n ₁ D d Given, n=10 For second source y₁ y₂ = 10 ₁ D d 5 ₂ D d y₁ y₂ = 2 ₁ ₂

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