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Solve: (a)
(b)
and
Reflect:
The third dark fringe is closer to the center of the screen than the third bright fringe on one side of the cen
tral bright fringe.
26.10. Set Up:
At large distances from the antennas the equation
gives the
angles where maximum intensity is observed and
gives the angles where
minimum intensity is observed.
Solve: (a)
(b)
26.11. Set Up:
is very small for these dark lines and the approximate
expression
is accurate. Adjacent dark lines are separated by
Solve:
26.12. Set Up:
Water has
In water the wavelength is
is very small for these dark lines
and the approximate expression
is accurate. Adjacent dark lines are separated by
Solve:
is smaller in water and the
dark lines are closer together when the apparatus is immersed in water.
26.13. Set Up:
The largest value
can have is 1.00. Bright fringes are located at angles
given by
Solve: (a)
For
Therefore, the largest
m
for fringes on
the screen is
There are
bright fringes, the central one and 19 above and 19 below it.
(b)
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This note was uploaded on 03/06/2009 for the course PHYS 114 taught by Professor Shoberg during the Spring '07 term at Pittsburg State Uiversity.
 Spring '07
 Shoberg
 Diffraction

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