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67. Interference fringes are produced using Lloyd's mirror
and a source S of wavelength A = 606 nm as shown in
Figure P37.67. Fringes separated by Ay = 1.20 mm are
formed on a screen a distance L = 2.00 m from the
source. Find the vertical distance h of the source above
the reflecting surface.
Viewing
screen
·L
P
S
Mirror
Figure P37.67

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