A double slit apparatus is immersed in a liquid of refractive index 1.33. It has slit separation of 1mm and distance between the plane of slit and screen 1.33m. The slits are illuminated by a parallel beam of light À whose wavelength in air is 6300 A. 1 (a) Calculate the fringe width (b) One of the slits of the apparatus is covered by a thin glass sheet of refractive index 1.53. Find the smallest thickness of the sheet to bring the adjacent minima on the axis.
A double slit apparatus is immersed in a liquid of refractive index 1.33. It has slit separation of 1mm and distance between the plane of slit and screen 1.33m. The slits are illuminated by a parallel beam of light À whose wavelength in air is 6300 A. 1 (a) Calculate the fringe width (b) One of the slits of the apparatus is covered by a thin glass sheet of refractive index 1.53. Find the smallest thickness of the sheet to bring the adjacent minima on the axis.
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Transcribed Image Text:A double slit apparatus is immersed in a liquid of
refractive index 1.33. It has slit separation of 1mm and
distance between the plane of slit and screen 1.33m.
The slits are illuminated by a parallel beam of light
Awhose wavelength in air is 6300 A.
(a) Calculate the fringe width (b) One of the slits of the
is covered by a thin glass sheet of refractive
apparatus
index 1.53. Find the smallest thickness of the sheet to
bring the adjacent minima on the axis.
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