#6 A double-slit interference pattern is observed on a screen 1.0 m behind two slits spaced 0.30 mm apart. Nine bright fringes span a distance of 1.7 cm. What is the wavelength of the light? d si
#6 A double-slit interference pattern is observed on a screen 1.0 m behind two slits spaced 0.30 mm apart. Nine bright fringes span a distance of 1.7 cm. What is the wavelength of the light? d si
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Transcribed Image Text:EXAMPLE 22.2 Measuring the wavelength of light
#6 A double-slit interference pattern is observed on a screen 1.0 m
behind two slits spaced 0.30 mm apart. Nine bright fringes span a
distance of 1.7 cm. What is the wavelength of the light?
d si
Need to feed this equation an angle to a specific
bright fringe measured from the central max.
Can figure that out from what they gave us:
04 = tan-¹ (0.85/100) = 0.487°
0₁
4
100 cm
0.85 cm
λ =
m=
m=
m=
m=
m=
m=
m=
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