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MHT CET202124 Sep 2021Morning ShiftPhysicsWave OpticsActual

In biprism experiment, 6^ th bright band with wavelength ' ₁ ' coincides with 7^ th dark band with wavelength ' ₂ ' then the ratio ₁: ₂ is (other setting remains the same)

Options

  1. A7 : 6
  2. B13 : 12
  3. C12 : 13
  4. D6 : 7

Correct answer

B. 13 : 12

Step-by-step solution

aligned & Distance of 6^ th bright band = 6 ₁ D d & Distance of 7^ th dark band = 6.5 ₂ D d & 6 ₁ D d = 6.5 ₂ D d & ₁ ₂ = 6.5 6 = 13 12 aligned

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