Light, imaging

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94 Questions - Developed by: V - Developed on: - 499 taken

  • 1
    - emissions of photons are caused by excitations of interacting atoms
     True
     False
  • 2
    - emissions of photons are caused by de-excitations of atoms
     True
     False
  • 3
    - atoms can be excited by absorption of any (whatever) photon
     True
     False
  • 4
    - atoms can be excited by absorption of photons with the energy = E2 -E1; (E1: the energy of basic state, E2: the energy of excited state of the atom)
     True
     False
  • 5
    - atoms can be excited by absorption of photons with the energy E2-E1; (E1, E2: the energies of different excited states of the atom)
     True
     False
  • 6
    - atoms can be excited by absorption of photons with the frequency ν = (E2-E1) / h ; (E1: the energy of excited state, E2: the energy of basic state of the atom)
     True
     False
  • 7
    - infrared light has lower intensity than the visible light
     True
     False
  • 8
    - infrared light has higher intensity than the visible light
     True
     False
  • 9
    - visible light has lower intensity than the ultraviolet light
     True
     False
  • 10
    - visible light has higher intensity than the ultraviolet light
     True
     False
  • 11
    - infrared light has lower wavelength than the visible light
     True
     False
  • 12
    - infrared light has higher wavelength than the visible light
     True
     False
  • 13
    - infrared light has higher wavelength than the ultraviolet light
     True
     False
  • 14
    - photons of visible light carry lower energy than the photons of ultraviolet light
     True
     False
  • 15
    - photons of visible light carry lower energy than the photons of infrared light
     True
     False
  • 16
    - spectrum of monochromatic light is one spectral line
     True
     False
  • 17
    - spectrum of polychromatic light is one spectral line
     True
     False
  • 18
    - spectrum of polychromatic light can be continuous
     True
     False
  • 19
    - spectrum of polychromatic light can contain several spectral lines
     True
     False
  • 20
    - dependence of the number of absorbed photons on energy of these photons represents
    the absorption spectrum
     True
     False
  • 21
    - population metastability within the active laser medium is required for laser beam
    generation
     True
     False
  • 22
    - pressure inversion within the active laser medium is required for laser beam generation
     True
     False
  • 23
    - population inversion within the active laser medium is required for laser beam
    generation
     True
     False
  • 24
    - metastability of basic state of molecules or atoms of active laser medium is required
    for laser beam generation
     True
     False
  • 25
    - light dispersion causes the opening aberration of lens
     True
     False
  • 26
    - irregular curvature of the cornea causes spherical aberration (e.g. nearsightedness)
     True
     False
  • 27
    - irregular curvature of the cornea causes aspherical aberration
     True
     False
  • 28
    - outer light has to penetrate several optical media with different refractive indexes before reaching the eye retina
     True
     False
  • 29
    - light penetrates several eye structures to reach the retina; the lowest refraction is
    observed between the air and the cornea
     True
     False
  • 30
    - light penetrates several eye structures to reach the retina; the lens contributes mainly to the total eye power
     True
     False
  • 31
    - index of refraction depends on the wavelength of light
     True
     False
  • 32
    - index of refraction depends on the speed of light
     True
     False
  • 33
    - index of refraction depends on the medium through which the light travels
     True
     False
  • 34
    - index of refraction is expressed in m/s2
     True
     False
  • 35
    - index of refraction is expressed in m/s
     True
     False
  • 36
    - index of refraction is expressed in m . s
     True
     False
  • 37
    - index of refraction depends on the angle of incidence of light
     True
     False
  • 38
    - critical angle is maximum possible angle when the light beams penetrate from the air
    into the prism
     True
     False
  • 39
    - critical angle is minimum possible angle when the light beams penetrate from the air
    into the prism
     True
     False
  • 40
    - critical angle is minimum possible angle when the light beams penetrate from the prism into the air
     True
     False
  • 41
    - critical angle is maximum possible angle when the light beams penetrate from the
    prism into the air
     True
     False
  • 42
    - magnification of the lens can be expressed as a ratio between the image and object
    heights
     True
     False
  • 43
    - magnification of the lens can be expressed as a ratio between the image and object
    widths
     True
     False
  • 44
    - magnification of the lens can be expressed as a ratio between the distances to the object and to the image
     True
     False
  • 45
    - magnification of the lens is expressed in dioptres
     True
     False
  • 46
    - magnification of the lens is expressed in (dioptres-1)
     True
     False
  • 47
    - magnification of the lens can be expressed in per cent
     True
     False
  • 48
    - magnification of the converging lens can be expressed as a ratio between the distances
    from the lens center to the image and from the lens center to the object
     True
     False
  • 49
    - the unit of optical power of eye is lux
     True
     False
  • 50
    - the unit of optical power of eye is dioptre
     True
     False
  • 51
    - the focal length of converging lens with the optical power of 5D is 20 cm
     True
     False
  • 52
    - the focal length of converging lens with the optical power of 5D is 2 cm
     True
     False
  • 53
    - the shorter the focal length of converging lens, the lower its refractivity
     True
     False
  • 54
    - the shorter the focal length of converging lens, the higher its refractivity
     True
     False
  • 55
    - the lower the radius of converging lens curvature, the lower the lens refractivity
     True
     False
  • 56
    - the higher the radius of converging lens curvature, the higher the lens refractivity
     True
     False
  • 57
    - fictive (non-real) image is produced on eye retina
     True
     False
  • 58
    - real image is produced on eye retina
     True
     False
  • 59
    - image on eye retina is inverted (inverse)
     True
     False
  • 60
    - image on eye retina is not straight (direct)
     True
     False
  • 61
    - image on eye retina is reduced (smaller than the object)
     True
     False
  • 62
    - image on eye retina is magnified (enlarged)
     True
     False
  • 63
    - resolution of light microscopes is proportional to the wavelength of used light and inversely proportional to the refractive index of environment between the slide (preparation) and the objective
     True
     False
  • 64
    - resolution of light microscopes is proportional to the wavelength of used light
     True
     False
  • 65
    - resolution of light microscopes depends on the refractive index of environment between the slide (preparation) and the objective
     True
     False
  • 66
    - magnification of microscope is a sum of magnifications relevant to individual optical parts of microscope, usually and mostly the sum of objective and eyepiece magnifications
     True
     False
  • 67
    - magnification of microscope is a ratio of magnifications relevant to individual optical parts of microscope, usually and mostly the ratio of objective and eyepiece magnifications
     True
     False
  • 68
    - magnification of microscope is a product of magnifications relevant to individual optical parts of microscope, usually and mostly the product of objective and eyepiece magnifications
     True
     False
  • 69
    - optimum magnification of microscope is usually attained by higher magnification of eyepiece and lower magnification of objective
     True
     False
  • 70
    - optimum magnification of microscope is usually attained by higher magnification of objective and lower magnification of eyepiece
     True
     False
  • 71
    - optimum magnification of microscope is usually attained by equal magnification of eyepiece and objective
     True
     False
  • 72
    - magnification of microscopes behind the optimum is called „empty magnification“, since this magnification does not allow to detect more details of an object
     True
     False
  • 73
    - magnification of microscopes below the optimum is called „empty magnification“, since this magnification does not allow to detect more details of an object
     True
     False
  • 74
    - each lens with optical power more than 4 D can be used as a magnifying glass
     True
     False
  • 75
    - each lens with optical power less than 4 D can be used as a magnifying glass
     True
     False
  • 76
    - converging lenses with high optical powers work as magnifying glasses if the object is placed in the focal distance or even closer to the lens
     True
     False
  • 77
    - converging lenses with high optical powers do not work as magnifying glasses if the object is placed further than the focal distance of the lens
     True
     False
  • 78
    - we observe real images of observed objects using both the magnifying glasses and microscopes
     True
     False
  • 79
    - we observe real images of observed objects using magnifying glasses, but fictive images in microscopes
     True
     False
  • 80
    - we observe real images of observed objects using microscopes, but fictive images in magnifying glasses
     True
     False
  • 81
    - a numerical aperture depends on an amount of light beams (the angle size), which gets in the objective from the observed spot (numerical aperture influences a resolution of the microscope)
     True
     False
  • 82
    - refractometric measurements of substance concentration employ the changes of the critical angle magnitude with changes of solution concentration
     True
     False
  • 83
    - spectrophotometric measurements of substance concentration employ the changes of the critical angle magnitude with changes of solution concentration
     True
     False
  • 84
    - we adjust and observe colour boundary at the position of critical angle during the measurement with refractometer
     True
     False
  • 85
    - converging lenses always produce real images of objects (regardless the position of objects to the lens)
     True
     False
  • 86
    - converging lenses can produce fictive images of objects
     True
     False
  • 87
    - fictive images are characterized by the fact that the light (photons) does not produce any image on the eye retina
     True
     False
  • 88
    - microscopes produce real images of observed objects because the function of eyepiece (ocular)
     True
     False
  • 89
    - microscopes produce real images of observed objects because the function of objective
     True
     False
  • 90
    - magnification of magnifying glass depends mostly on object position and very little on the lens optical power
     True
     False
  • 91
    - magnification of magnifying glass depends mainly on the lens optical power
     True
     False
  • 92
    - during the measurement of the size of objects using the microscope one must calibrate the ocular scale
     True
     False
  • 93
    - during the measurement of the distance to objects using the microscope, one must calibrate the ocular scale
     True
     False
  • 94
    True
     True
     False

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