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MHT CET202312 May 2023Evening ShiftPhysicsWave OpticsActual

One of the slits in Young's double slit experiment is covered with a transparent sheet of thickness 2.9 10⁻³ ~cm . The central fringe shifts to a position originally occupied by the 25^ th bright fringe. If =5800 Å , the refractive index of the sheet is

Options

  1. A1.65
  2. B1.60
  3. C1.55
  4. D1.50

Correct answer

D. 1.50

Step-by-step solution

As it is given that a transparent sheet of certain thickness is inserted, we use aligned & ( -1) t = N & 25 =( -1) t & -1= 25 t aligned The refractive index of the sheet is: aligned & = 25 5800 10⁻¹⁰ 2.9 10⁻⁵ +1 & =1.50 aligned

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