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BITSAT2020PhysicsWave OpticsActual

A thin sheet of glass ( =1.5) of thickness 6 micron introduced in the path of one of the interfering beams in a double slit experiment shifts the central fringe to a position previously occupied by fifth bright fringe. Then the wavelength of light used is

Options

  1. A6000 Ã
  2. B3000 Ã
  3. C4500 Ã
  4. D7500 Ã

Correct answer

A. 6000 Ã

Step-by-step solution

n =( -1) t ; = ( -1) t n = (1.5-1) 6 10⁻⁶ 5 =6000 ~A

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