Assume light of wavelength 650 nm passes through two slits 3.00 μm wide, with their centers 9.00 μm apart. Make a sketch of the combined diffraction and interference pattern in the form of a graph of intensity versus θ = (πa sin θ)/λ. You may as shown as a starting point. The diffraction pattern actsas an "envelope" (the bluedashed curve) that controlsthe intensity of the regularlyspaced interference maxima.InterferencefringesDiffractionminimaa sin e-2Figure 37.7 The combinedeffects of two-slit and single-slitinterference. This pattern isproduced when 650-nm lightwaves pass through two 3.0-µmslits that are 18 µm apart.

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University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 39P: When a monochromatic light of wavelength 430 nm incident on a double slit of slit separation 5 m,...

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Assume light of wavelength 650 nm passes through two slits 3.00 μm wide, with their centers 9.00 μm apart. Make a sketch of the combined diffraction and interference pattern in the form of a graph of intensity versus θ = (πa sin θ)/λ. You may as shown as a starting point.

The diffraction pattern acts
as an "envelope" (the blue
dashed curve) that controls
the intensity of the regularly
spaced interference maxima.
Interference
fringes
Diffraction
minima
a sin e
-2
Figure 37.7 The combined
effects of two-slit and single-slit
interference. This pattern is
produced when 650-nm light
waves pass through two 3.0-µm
slits that are 18 µm apart.

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