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Wave Optics: Diffraction and Interference - Class XII

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Multiple Choice

In a Fresnel biprism experiment, the two positions of lens give separation between the slits as $16 $cm and$9 $cm, respectively. What is the actual distance of separation?

  1. $12.5 cm$
  2. $12 cm$
  3. $13 cm$
  4. $14 cm$
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