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MHT CET202314 May 2023Evening ShiftPhysicsWave OpticsActual

On replacing a thin film of mica of thickness 12 10⁻⁵ ~cm in the path of one of the interfering beams in Young's double slit experiment using monochromatic light, the fringe pattern shifts through a distance equal to the width of bright fringe. If =6 10⁻⁵ ~cm , the refractive index of mica is

Options

  1. A1.1
  2. B1.3
  3. C1.5
  4. D1.4

Correct answer

C. 1.5

Step-by-step solution

The equation for the shift in the fringe pattern is given as, n =( -1) t Refractive index of mica is: array ll & = n t +1 & = 1 6 10⁻⁵ 12 10⁻⁵ +1=0.5+1 & =1.5 array

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