Question

Two rectangular, optically flat glass plates (of index of refraction 1.41) are in con- tact along one end and are separated along the other end by a sheet of paper that is 42 µm thick. The top plate is illuminated by monochromatic light (of wavelength 555 nm). An interference pattern results from the re- flection of this light by the bottom surface of the top plate and the top surface of the bottom plate. What is the phase change as the light is reflected from the top surface of the bottom glass plate? part 2 of 2 Calculate the number of dark parallel bands crossing the top plate including the dark band at zero separation along the line of contact. The last dark band is to be counted if and only if its center (where the intensity is zero) is present.

          Two rectangular, optically flat glass plates
(of index of refraction 1.41) are in con-
tact along one end and are separated along
the other end by a sheet of paper that is
42 µm thick. The top plate is illuminated by
monochromatic light (of wavelength 555 nm).
An interference pattern results from the re-
flection of this light by the bottom surface
of the top plate and the top surface of the
bottom plate.
What is the phase change as the light is
reflected from the top surface of the bottom
glass plate?
part 2 of 2
Calculate the number of dark parallel bands
crossing the top plate including the dark band
at zero separation along the line of contact.
The last dark band is to be counted if and
only if its center (where the intensity is zero)
is present.

$Two rectangular, optically flat glass plates (of index of refraction 1.41) are in con- tact along one end and are separated along the other end by a sheet of paper that is 42 µm thick. The top plate is illuminated by monochromatic light (of wavelength 555 nm). An interference pattern results from the re- flection of this light by the bottom surface of the top plate and the top surface of the bottom plate. What is the phase change as the light is reflected from the top surface of the bottom glass plate? part 2 of 2 Calculate the number of dark parallel bands crossing the top plate including the dark band at zero separation along the line of contact. The last dark band is to be counted if and only if its center (where the intensity is zero) is present.$

Added by Scott W.

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