st diffraction minima.).
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Transcribed Image Text:A laser emits a beam of light with a wavelength of 500nm which is incident upon a double slit and produces an interference pattern on a screen 20 m away
Central Bright:
Bright
Double Slib
4.
B
and
Choon
3
S
107
Surean
20m
LASER
d
a) Determine the distance between the slits, a.
(Hint: Determine the spacing between the bright bands)
a =
mm
b) Determine the width of the slits, D.
(Hint: Determine the position of the first diffraction minima.)
D =
mm
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