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Exam
Name___________________________________
MULTIPLE
CHOICE.
Choose
the
one
alternative
that
best
completes
the
statement
or
answers
the
question.
1) A
single
slit
forms
a
diffraction
pattern,
with
the
Frst
minimum
at
an
angle
of
40°
from
central
maximum.
Monochromatic
light
of
450

nm
wavelength
is
used.
The
same
slit,
illuminated
by
a
different
monochromatic
light
source,
produces
a
diffraction
pattern
with
the
second
minimum
at
a
60°
angle
from
the
central
maximum.
The
wavelength
of
this
light,
in
nm,
is
closest
to:
A) 375
B) 357
C) 303
D) 321
E) 339
1)
2) A
single
slit
forms
a
diffraction
pattern,
with
the
Frst
minimum
at
an
angle
of
40°
from
central
maximum.
Monochromatic
light
of
640

nm
wavelength
is
used.
The
width
of
the
slit,
in
nm,
is
closest
to:
A) 996
B) 914
C) 955
D) 873
E) 832
2)
3) A
single
slit,
2300
nm
wide,
forms
a
diffraction
pattern
when
illuminated
by
monochromatic
light
of
460

nm
wavelength.
The
largest
angle
from
the
central
maximum
at
which
the
intensity
is
zero
is
closest
to:
A) 84°
B) 78°
C) 81°
D) 87°
E) 90°
3)
4) A
single
slit,
1500
nm
wide,
forms
a
diffraction
pattern
when
illuminated
by
monochromatic
light
of
620

nm
wavelength.
At
an
angle
of
10°
from
the
central
maximum,
the
phase
angle
between
wavelets
originating
at
the
far
edge
of
the
slit,
relative
to
wavelets
originating
at
the
near
edge,
is
closest
to:
A) 2.0
rad
B) 2.6
rad
C) 1.3
rad
D) 4.0
rad
E) 3.3
rad
4)
5) A
single
slit,
2300
nm
wide,
forms
a
diffraction
pattern
when
illuminated
by
monochromatic
light
of
660

nm
wavelength.
At
an
angle
of
10°
from
the
central
maximum,
the
ratio
of
the
intensity
to
that
of
the
central
maximum
is
closest
to:
A) 0.33
B) 0.25
C) 0.41
D) 0.29
E) 0.37
5)
6) A
single
slit
forms
a
diffraction
pattern
with
monochromatic
light.
The
6th
minimum
of
the
pattern
occurs
at
an
angle
of
23°
from
the
central
maximum.
The
number
of
bright
bands
on
either
side
of
the
central
band
is
closest
to:
A) 16
B) 13
C) 14
D) 15
E) 17
6)
7) A
single
slit
forms
a
diffraction
pattern
with
monochromatic
light.
The
fourth
minimum
of
the
pattern
occurs
at
an
angle
of
25°
from
the
central
maximum.
The
angle
at
which
the
Ffth
minimum
of
the
pattern
occurs
is
closest
to:
A) 31.4°
B) 32.9°
C) 31.9°
D) 32.4°
E) 30.9°
7)
8) An
18
mm
wide
diffraction
grating
has
rulings
of
690
lines
per
mm.
Light
is
incident
normally
on
the
grating.
Monochromatic
light
of
554
nm
wavelength
is
used.
The
largest
angle
from
the
normal
at
which
an
intensity
maximum
is
formed
is
closest
to:
A) 50
B) 46
C) 48
D) 42
E) 44
8)
1
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View Full Document 9) An
2.5

mm
wide
diffraction
grating
has
rulings
of
830
lines
per
mm.
Light
is
incident
normally
on
the
grating.
Two
spectral
lines
have
wavelengths
close
to
577

nm
and
the
difference
in
their
wavelengths
is
small.
The
smallest
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This note was uploaded on 12/13/2011 for the course PHYS 2C PHYS 2C taught by Professor Groisman during the Spring '11 term at UCSD.
 Spring '11
 groisman

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