Mirror M₁ in the figure below is moved through a displacement AL. During this displacement, 248 fringe reversals (formation of successive dark or bright bands) are counted. The light being used has a wavelength of 631.4 nm. Calculate the displacement AL. um A single ray of light is split into two rays by mirror Mo, which is called a beam splitter. Telescope As M₁ is moved, an interference pattern changes in the field of view. Light source La M₂ Mo The path difference between the two rays is varied with the adjustable mirror M₁. M₁
Mirror M₁ in the figure below is moved through a displacement AL. During this displacement, 248 fringe reversals (formation of successive dark or bright bands) are counted. The light being used has a wavelength of 631.4 nm. Calculate the displacement AL. um A single ray of light is split into two rays by mirror Mo, which is called a beam splitter. Telescope As M₁ is moved, an interference pattern changes in the field of view. Light source La M₂ Mo The path difference between the two rays is varied with the adjustable mirror M₁. M₁
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Transcribed Image Text:Mirror M₁ in the figure below is moved through a displacement AL. During this displacement, 248 fringe reversals (formation of successive dark or bright bands) are counted. The light being used has a
wavelength of 631.4 nm. Calculate the displacement AL.
μm
A single ray of light is
split into two rays by
mirror Mo, which is
called a beam splitter.
Telescope
As M₁ is moved, an
interference
pattern changes in
the field of view.
Light
source
L₂
M₂
Mo
4₁
The path difference between
the two rays is varied with the
adjustable mirror M₁.
M₁
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