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AP EAMCET201921 Apr 2019Evening ShiftPhysicsWave OpticsActual

A Young double slit experimental setup is immersed in water of refractive index 1 . 33 . It has slit separation 1 mm and the distance between slits and screen is 1 . 33 m . If the wavelength of incident light on slits is 6300 A then the fringe width on screen is

Options

  1. A6 . 3   mm
  2. B0 . 63   mm
  3. C0 . 63   m
  4. D6 . 3   m

Correct answer

B. 0 . 63   mm

Step-by-step solution

The fringe width when Young's double slit experiment setup is immersed in water, y = λ D μ d Substitute the given values in the above equation. y = 6300 × 10 - 10 × 1 . 33 1 . 33 × 10 - 3 y = 6 . 3 × 10 - 4   m y = 0 . 63   mm

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