PHY8
Authored by Anea Zimmerman
Physics
University
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54 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
what are the sign conventions for objects and images for lenses?
o: (+) object is on same side of lens as light source
(-) image is on opposite side of lens from light source (real)
o: (+) object is on same side of lens as light source
(-) object is on opposite side of lens from light source (rare)
i: (+) object is on same side of lens as light source
(-) image is on same side of lens as light source (virtual)
i: (+) image is on opposite side of lens from light source (real)
(-) image is on same side of lens as light source (virtual)
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
when a light ray reflects from one medium to another the frequency is unaffected by refraction
true
false
3.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
when a light ray refracts from one medium to another how does its speed change?
if the 2nd mediums index of refraction is lower the light ray goes faster
if the 2nd mediums index of refraction is lower the light ray goes slower
if the 2nd mediums index of refraction is higher the light ray goes faster
if the 2nd mediums index of refraction is higher the light ray goes slower
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
what happens to the intensity of unpolarized transmitted light when it first goes through a polarizer?
intensity is halved
intensity is doubled
intensity is quartered
intensity is quadrupled
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
what is plane polarized light?
light in which all the electric field vectors are lined up in one plane
light in which all the electric field vectors are lined up in multiple planes
light in which all the magnetic field vectors are lined up in one plane
light in which all the magnetic field vectors are lined up in multiple planes
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
what is diffraction?
the spreading out of waves as they pass through a narrow opening or around an obstacle
the spreading out of waves as they pass through a wide opening or around an obstacle
the condensing of waves as they pass through a narrow opening or around an obstacle
the condensing of waves as they pass through a wide opening or around an obstacle
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
what is dispersion?
when various wavelengths of light separate from one another
when various wavelengths of light come together
forces between molecules
when various wavelengths of light have multiple frequencies
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