Question

In a Young device where the slits are separated by distance d= 0.4 mm and the distance from the plane of the slits to the screen is L=1 m , one of the slits is covered with a thin glass plate having the thickness of 10 A double-slit experiment produces fringes on a distant screen. How does the linear separation between the bright maxima on the screen change when a) the wavelength of light doubles? b) The separation between the slits doubles? c) The distance between the slits and the screen doubles? d) The intensity of the light doubles?

          In a Young device where the slits are separated by distance d= 0.4 mm and the distance from the plane of the slits to the screen is L=1 m , one of the slits is covered with a thin glass plate having the thickness of 10 A  double-slit  experiment  produces  fringes  on  a  distant  screen.  How  does  the  linear  separation between the bright maxima on the screen change when a) the wavelength of light  doubles?  b)  The  separation  between  the  slits  doubles?  c)  The  distance  between  the slits and the screen doubles? d) The intensity of the light doubles?

Added by Gabriel R.

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