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(I1) GW_Reflection and Refraction
PHY 20 2 Student Code: nature
ISRFY
A photon (or particle of light) has a frequency of 4.40E+05 Hz. What is the energy of the particle?
A. 3.184E-28 J D. 2.598E-28 J
B. 2.975E-28 J E. 3.620E-28 J
C. 2 .917E-28 J F. 2.877E-28 J
ISRGA
Calculate the speed of light in glycerin.
A. 1.647E+08 m/s D. 1.924E+08 m/s
B. 1.671E+08 m/s E. 2.037E+08 m/s
C. 2.408E+08 m/s F. 2.415E+08 m/s
OUOGG
Which color light bends the most when refracted?
A. Red D. Green
B. Orange E. Blue
C. Yellow F. Violet
ISRGD
Light is refracted from the air into a quartz crystal. If the incident angle is 25°, what is the refracted
angle?
A. 17.81° D. 16 .85°
B. 20.16° E. 13.67°
C. 20.62° F. 20.72°
JGRYV
Light is refracted from water into quartz crystal. If the incident angle is 20°, what is the refracted angle?
A. 21.69° D. 18.22°
B. 21.65° E. 19.13°
C. 20.86° F. 15.55°
OUOGH
Can a (crown) glass tube function as an optical fiber when under water?
A. No
B. Yes
ISRGH
What is the critical angle for total internal reflection for quartz in air?
A. 42.62° D. 37.42°
B. 43.30° E. 33.99°
C. 34.46° F. 35.87°
ITILB
A ray of light inside a diamond escapes by striking the surface of the diamond (which is in air) at angle 5
degrees less than the critical angle for total internal reflection. What is the angle of refraction for the ray
as it emerges from the diamond?
A. 57.93° D. 58.37°
B. 52.10° E. 46.21°
C. 51.22° F. 53.54°
(I2) GW_Mirrors and Lenses
PHY 20 2 Student Code: nature
PPXUA
For the concave mirror, use at least two “key” rays to produce the image. Then respond to the “usual”
questions. (Sketch is recommended but not graded.)
- Upright or Inverted?
A. Upright
B. Inverted
- Real or Virtual?
A. Real
B. Virtual
- Magnification Axis
A.
B.
C.
D.
Front
Back
C F
O
PPXUK
For the convex mirror, use at least two “key” rays to produce the image. Then respond to the “usual”
questions. (Sketch is recommended but not graded.)
- Upright or Inverted?
A. Upright
B. Inverted
- Real or Virtual?
A. Real
B. Virtual
- Magnification Axis
A.
B.
C.
D.
Front
Back
F C
O
PPYFO
For the diverging lens, use at least two “key” rays to produce the image. Then respond to the “usual”
questions. (Sketch is recommended but not graded.)
- Upright or Inverted?
A. Upright
B. Inverted
- Real or Virtual?
A. Real
B. Virtual
- Magnification Axis
A.
B.
C.
D.
Front
Back
F F
O
PPXBX
A concave mirror has focal length with
= 3ˍcm. If an object with height 2ˍcm is placed 6.5ˍcm in front
of the mirror, then find the image position and image height. (It is recommended to also sketch the
system, as a check on the math.)
- Image Position 𝑞
A. 5.571ˍcm D. 5.971ˍcm
B. 5.753ˍcm E. 5.348ˍcm
C. 6.379ˍcm F. 6.175ˍcm
- Image Height ℎ′
A. - 1.714ˍcm D. - 1.465ˍcm
B. - 1.406ˍcm E. - 1.655ˍcm
C. - 1.567ˍcm F. - 1.331ˍcm
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PPEMU
A converging lens has focal length with
= 2.5ˍcm. If an object with height 2.5ˍcm is placed 7.5ˍcm in
front of the lens, then find the image position and image height. (It is recommended to also sketch the
system, as a check on the math.)
- Image Position 𝑞
A. 3.957ˍcm D. 4.33ˍcm
B. 3.463ˍcm E. 4.148ˍcm
C. 3.75ˍcm F. 3.602ˍcm
- Image Height ℎ′
A. - 1.155ˍcm D. - 1.309ˍcm
B. - 1.026ˍcm E. - 1.09ˍcm
C. - 1.25ˍcm F. - 1.197ˍcm
Front Back
PPXDW
A diverging lens has focal length with
= 3.5ˍcm. If an object with height 2.5ˍcm is placed 6ˍcm in front
of the lens, then find the image position and image height. (It is recommended to also sketch the system,
as a check on the math.)
- Image Position 𝑞
A. - 2.211ˍcm D. - 2.282ˍcm
B. - 2.555ˍcm E. - 2.113ˍcm
C. - 2.438ˍcm F. - 2.37ˍcm
- Image Height ℎ′
A. 0.7316ˍcm D. 0.8214ˍcm
B. 0.7777ˍcm E. 0.9211ˍcm
C. 0.8715ˍcm F. 0.9558ˍcm
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PPWYL
An electromagnetic wave has intensity 180ˍW/m² when it comes to a polarizing filter. The wave’s electric
field makes an angle of 70° with the polarization axis of the filter. What is the intensity of the transmitted
part of the wave?
- Intensity of transmitted wave =
A. 19.57ˍW/m² D. 18.9ˍW/m²
B. 21.06ˍW/m² E. 20.35ˍW/m²
C. 17.03ˍW/m² F. 18ˍW/m²
PPWYY
Light traveling through air is reflected off a material with index of refraction 1.14. Find the polarization
angle (or Brewster’s angle) at which the reflected light is fully polarized.
- Polarization angle =
A. 55.74° D. 48.74°
B. 51.65° E. 53.3°
C. 46.73° F. 57.92°
(I 4 ) Test_Optics
PHY 20 2 Student Code: nature
(I1) Reflection and Refraction
ISRGB
Calculate the speed of light in quartz.
A. 2.058E+08 m/s D. 2.212E+08 m/s
B. 2.328E+08 m/s E. 1.879E+08 m/s
C. 1.670E+08 m/s F. 2.166E+08 m/s
ISRGE
Light is refracted from quartz into air. If the incident angle is 28°, what is the refracted angle?
A. 44.27° D. 43.20°
B. 53.73° E. 38.47°
C. 40.79° F. 40.19°
KQLGR
Can light inside an air bubble in water be totally internally reflected? Be prepared to explain your answer.
A. No
B. Yes
ISRGI
What is the critical angle for total internal reflection for diamond in water?
A. 25.78° D. 33.89°
B. 33.18° E. 31.22°
C. 36 .84° F. 33.44°
(I2) Mirrors and Lenses
PPCCA
For the concave mirror, respond to the “usual” questions. (It is recommended to sketch the system, use at
least two “key” rays to produce the image, before answering the questions.)
- Upright or Inverted?
A. Upright
B. Inverted
- Real or Virtual?
A. Real
B. Virtual
- Magnification Axis
A.
B.
C.
D.
Front Back
C F
O
PPXEM
A concave mirror has focal length with
= 4ˍcm. If an object with height 3ˍcm is placed 3ˍcm in front of
the mirror, then find the image position and image height. (It is recommended to also sketch the system,
as a check on the math.)
- Image Position 𝑞
A. - 13.14ˍcm D. - 12.72ˍcm
B. - 13.84ˍcm E. - 14.84ˍcm
C. - 14.21ˍcm F. - 12ˍcm
- Image Height ℎ′
A. 10.43ˍcm D. 11.61ˍcm
B. 12.56ˍcm E. 9.989ˍcm
C. 11.15ˍcm F. 12ˍcm
(I3) Wave Optics
ISZOJ
In the Young-type experiments, how many slits are necessary for a diffraction pattern to be observed?
A. 4 D. 5
B. 2 E. 1
C. 3 F. 6
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