Q33.1
When light passes from vacuum (index of refraction n = 1)
into water (n = 1.333),
A. the wavelength increases and the frequency is unchanged.
B. the wavelength decreases and the frequency is
unchanged.
C. the wavelength is unchanged and the frequency increases.
D. the wavelength is unchanged and the frequency
decreases.
E. both the wavelength and the frequency change.
© 2016 Pearson Education, Inc.
A33.1
When light passes from vacuum (index of refraction n = 1)
into water (n = 1.333),
A. the wavelength increases and the frequency is unchanged.
B. the wavelength decreases and the frequency is
unchanged.
C. the wavelength is unchanged and the frequency increases.
D. the wavelength is unchanged and the frequency
decreases.
E. both the wavelength and the frequency change.
© 2016 Pearson Education, Inc.
Q33.2
Light passes from vacuum (index of refraction n = 1) into water
(n = 1.333). If the incident angle is in the range 0° < < 90°,
A. the refracted angle is greater than the incident angle.
B. the refracted angle is equal to the incident angle.
C. the refracted angle is less than the incident angle.
D. two of A, B, and C are possible, depending on the specific
value of .
E. all three of A, B, and C are possible, depending on the
specific value of .
© 2016 Pearson Education, Inc.
A33.2
Light passes from vacuum (index of refraction n = 1) into water
(n = 1.333). If the incident angle is in the range 0° < < 90°,
A. the refracted angle is greater than the incident angle.
B. the refracted angle is equal to the incident angle.
C. the refracted angle is less than the incident angle.
D. two of A, B, and C are possible, depending on the specific
value of .
E. all three of A, B, and C are possible, depending on the
specific value of .
© 2016 Pearson Education, Inc.
Q33.3
Light passes from a medium of index of refraction na into a
second medium of index of refraction nb. The angles of
incidence and refraction are
respectively. If na < nb,
A.
and the light speeds up as it enters the second
medium.
B.
and the light slows down as it enters the second
medium.
C.
and the light speeds up as it enters the second
medium.
D.
and the light slows down as it enters the second
medium.
E. none of the above are true.
© 2016 Pearson Education, Inc.
A33.3
Light passes from a medium of index of refraction na into a
second medium of index of refraction nb. The angles of
incidence and refraction are
respectively. If na < nb,
A.
and the light speeds up as it enters the second
medium.
B.
and the light slows down as it enters the second
medium.
C.
and the light speeds up as it enters the second
medium.
D.
and the light slows down as it enters the second
medium.
E. none of the above are true.
© 2016 Pearson Education, Inc.
Q33.4
Light passes from a medium of index of refraction na into a
second medium of index of refraction nb. The critical angle for
total internal reflection is
In order for total internal
reflection to occur, what must be true about na, nb, and the
incident angle ?
© 2016 Pearson Education, Inc.
A33.4
Light passes from a medium of index of refraction na into a
second medium of index of refraction nb. The critical angle for
total internal reflection is qcrit. In order for total internal
reflection to occur, what must be true about na, nb, and the
incident angle qa?
© 2016 Pearson Education, Inc.
Q33.5
Three polarizing filters are stacked with the polarizing axes of
the second and third filters oriented at 45° and 90°, respectively,
relative to the polarizing axis of the first filter. Unpolarized
light of intensity I0 is incident on the first filter. The intensity of
light emerging from the third filter is
© 2016 Pearson Education, Inc.
A33.5
Three polarizing filters are stacked with the polarizing axes of
the second and third filters oriented at 45° and 90°, respectively,
relative to the polarizing axis of the first filter. Unpolarized
light of intensity I0 is incident on the first filter. The intensity of
light emerging from the third filter is
© 2016 Pearson Education, Inc.
Q33.6
Natural light is incident on the surface of a liquid. The reflected
light will be completely polarized if the incident angle is
A. greater than the polarizing angle.
B. equal to the polarizing angle.
C. less than the polarizing angle.
D. more than one of A, B, and C is possible.
E. misleading question — the reflected light can never be
completely polarized.
© 2016 Pearson Education, Inc.
A33.6
Natural light is incident on the surface of a liquid. The reflected
light will be completely polarized if the incident angle is
A. greater than the polarizing angle.
B. equal to the polarizing angle.
C. less than the polarizing angle.
D. more than one of A, B, and C is possible.
E. misleading question — the reflected light can never be
completely polarized.
© 2016 Pearson Education, Inc.
Q33.7
Natural light is incident on the surface of a liquid. The
transmitted (refracted) light will be completely polarized if the
incident angle is
A. greater than the polarizing angle.
B. equal to the polarizing angle.
C. less than the polarizing angle.
D. more than one of A, B, and C is possible.
E. misleading question — the reflected light can never be
completely polarized.
© 2016 Pearson Education, Inc.
A33.7
Natural light is incident on the surface of a liquid. The
transmitted (refracted) light will be completely polarized if the
incident angle is
A. greater than the polarizing angle.
B. equal to the polarizing angle.
C. less than the polarizing angle.
D. more than one of A, B, and C is possible.
E. misleading question — the reflected light can never be
completely polarized.
© 2016 Pearson Education, Inc.
Q-RT33.1
A ray of light propagating in
material a strikes the interface with
material b at an angle
measured from the normal.
Rank the following situations in
order of the angle of the
refracted ray in material b, from
greatest angle to smallest angle.
A. na = 1.0, nb = 1.5
B. na = 1.5, nb = 1.0
C. na = 1.5, nb = 2.0
D. na = 2.0, nb = 1.5
© 2016 Pearson Education, Inc.
Material a
Material b
Normal
A-RT33.1
A ray of light propagating in
material a strikes the interface with
material b at an angle
measured from the normal.
Rank the following situations in
order of the angle of the
refracted ray in material b, from
greatest angle to smallest angle.
Material a
Material b
Normal
A. na = 1.0, nb = 1.5
B. na = 1.5, nb = 1.0
C. na = 1.5, nb = 2.0
D. na = 2.0, nb = 1.5
© 2016 Pearson Education, Inc.
Answer: BDCA