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Wave Optics question

2003 · Shift 0 · Q139
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Wave Optics question

2003 · Shift 0 · Q139

JEE MainPhysicsWave OpticsMCQ+4 / −1
To demonstrate the phenomenon of interference, we require two sources which emit radiation
  1. A
    of nearly the same frequency
  2. B
    of the same frequency
  3. C
    of different wavelengths
  4. D
    of the same frequency and having a definite phase relationship
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