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MHT CET20228 Aug 2022Morning ShiftPhysicsWave OpticsActual

In Young's double slit experiment with monochromatic light, fringes are obtained on a screen placed at some distance from the slits. If the screen is moved by 5 10⁻² ~m towards the slits, the change in fringe width is 3 10⁻⁵ ~m . If the separation between the slits is 10⁻³ ~m , the wavelength of light used is

Options

  1. A6000 Å
  2. B5000 Å
  3. C45000 Å
  4. D3000 Å

Correct answer

A. 6000 Å

Step-by-step solution

aligned & = D d & = ( D) d & = (d)( ) D = ( (10⁻³ ) (3 10⁻⁵ ) ) 5 10⁻² =0.6 10⁻⁶ ~m =6000 Å aligned

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