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A parallel monochromatic beam of light is incident normally on a narrow slit. A diffraction pattern is formed on a screen placed perpendicular to the direction of the incident beam. At the first minimum of the diffraction pattern, the phase difference between the rays coming from the two edges of the slit is
  • a)
    Zero
  • b)
    π/2
  • c)
    π
  • d)
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
A parallel monochromatic beam of light is incident normally on a narro...


  ...(1)
Now, at P (first minima) path difference between the rays reaching from two edges (A and B) will be

Corresponding phase difference (φ) will be
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A parallel monochromatic beam of light is incident normally on a narro...
Zero
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A parallel monochromatic beam of light is incident normally on a narrow slit. A diffraction pattern is formed on a screen placed perpendicular to the direction of the incident beam. At the first minimum of the diffraction pattern, the phase difference between the rays coming from the two edges of the slit isa)Zerob)π/2c)πd)2πCorrect answer is option 'D'. Can you explain this answer?
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