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AP EAMCET20226 Jul 2022Morning ShiftPhysicsWave OpticsActual

Two coherent sources O ₁ and O ₂ in Young's double slit experiment are illuminated with monochromatic light of wavelength 5000 Å . If a second order dark fringe is formed at a point R on the screen, the path difference O ₁ R O ₂ R is

Options

  1. A7.5 m
  2. B0.75 m
  3. C0.075 m
  4. D75 m

Correct answer

B. 0.75 m

Step-by-step solution

For second order dark fringe x = 3 2 [ x = ( n - 1 2 ) , for n th minima ] aligned & O ₁ R O ₂ R = 3 2 5000=7500 Å & =0.75 m aligned

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