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Untitled

akabertbud Inglês 54 flashcards

Flashcards do conjunto (54)

  1. 1Single-slit diffraction gives proof that light isa wave phenomeon
  2. 2Some crystalline solids have a different index of refrraction for light of different polarizations. This phenomenon is calleddouble refraction
  3. 3The angle through which the plane of polarization is rotated is frequently a function of wavelength. this effect is known asrotary dispersion
  4. 4A diverging lens always forms this kind of imagevirtual image
  5. 5The distance from the surface of a lens to the point where parallen rays intersect is known as thefocal length
  6. 6After parallen rays pass through a lens, the position on the axis where they intersect is known as thefocal point
  7. 7The relationship between the angle of incidence and the angle of refraction is given bySnell's Law
  8. 8Shen calculatinv the solution to an image problem analytically, the sign of the magnification tells us whether the image isupright ori nverted
  9. 9When calculating the solution to an image problem analytically, the absolute value of the magnitude of the magnification tells us whether the imageis enlarged or reduced
  10. 10When calculating the solution to an image problem analytically, the sign of the image distance tells us whether the imageis real or virtual
  11. 11In order to reduce the possibility of eye fatigue, an optical instrument should be designed so that the eyepiece produces an imageat infinity
  12. 12Which type of lens can be used as a simple magnifier?a converging lens
  13. 13Young's double slit experiment gives proof that light isa wave phenomenon
  14. 14Polarization gives proof that light isa transvers wave
  15. 15The miniumum angle of incidence which causes the total reflection of light is calledcritical angle
  16. 16The first postulate of the Special Theory of Relativity is thatthe laws of physics are the same in all inertial reference frames
  17. 17The second postulate of the Special Theory of Relativity is thatthe speed of light is the same for all observers
  18. 18A clock is moving at a speed which is a significant fraction of the speed of light. When we compare the moving clock to one which is at rest next to us, we find the moving clock to be runningslow
  19. 19A beam of particles is traveling at 0.85c within a laboratyr apparatus where we measure the decay time of the particles. Is this a proper time measurement?No
  20. 20A beam of particles is traveling at 0.85c within laboratyr apparatus and we meaesrue the length of the apparatus. Is this a proper length measurement?yes
  21. 21The speed of ligth does not depend on our motion through space. This observation was verified byThe Michelson-Morley experiment
  22. 22SI Activity UnitsBq
  23. 23SI Exposure UnitR
  24. 24Historical activity unitCi
  25. 25Historical exposure unitGy
  26. 26Biological equivalent doseSv
  27. 27Nuclear Densitykg/m^3
  28. 28What can be said about the magnitud eof the net torque on a magnetic dipole placed ina uniform magnetic field?it depends on the strength of the magnetic field and the angle between the magnetic dipole and the field
  29. 29When viewing electric field lines, wek now that the direction of the electric field at any given point isTangent to the field lines
  30. 30Electric feld lines are drawn so that they start at and point away frompositive charges
  31. 31Under electrostatic conditions (equilibrium), the electric field inside a conductor iszero
  32. 32Under electrostatic conditions (equilibrium), the electric potential inside a conductor isconductor
  33. 33Equipotential surfaces are alwaysperpendicular to the electric field lines
  34. 34Gauss' Law says that the total eelectric flux which passes through a closed surface of arbirtrary shape isproportional to the enclosed charge
  35. 35Gauss' Law says that the total electric flus which passes through an open surface of arbitrary shape isGauss' Law does not apply to open surfaces
  36. 36For many materials, increasing the temperature of the material causes the resistance toincrease
  37. 37Kirchoff's Junction Rule is equilvanet to a statement of the Conservation ofelectric charge
  38. 38Kirchoff's Loope Rule is equilvalent to a statement of the conservation ofenergy
  39. 39The time constant of a capacitave circuit is directly proportional to the capaitance and theresistance
  40. 40An electric current flows east. If there is a magnetic field pointed straight down, what is the direction of the force on the current carrying conductor?north
  41. 41What can be said about the magnitude of the net force on a magnetic dipole placed in a uniform magnetic field?it is zero
  42. 42When viewing electric field lines, we know that the strength of the electric field at any given point isInversely proportional to the space between lines
  43. 43You are looking straight at the end of a conductor which is carrying an electric current directly toward you. What is the direction of the magnetic field produced by this current?counter-clockwise
  44. 44You are looking straigth down on a current loop which lies in a horizontal plane and carries a clockwise current. The magnetic field at the center of the loop pointsdown
  45. 45A circular loo of wire lies in the plane of the page. There is a magnetic field pointed out of the page and the strength of the magnetic field is increasing. the induced currentflows clockwise around the loop
  46. 46A coil of wire carries a current which produces a magnetic field. If the current is changing then the magnetic field changes and an opposing emp is induced in the coil. The ratio of the induced emp to the rate at which the current changes is known asinductance
  47. 47An AC voltage is applied to a circuit element and it is found that the current leads the voltage by 90degrees. The circuit element is a(n)capacitor
  48. 48In an electromagnetic wave, the angle between the magnetic field and the direction of propogation is90 degrees
  49. 49In an electromagnetic wave, the angle between the electric field and the magnetic field is90 degrees
  50. 50An electromagnetic wave is an example of this type of wave motiontransverse wave
  51. 51An incident ray of light and the normal to a surface define the plane of incidence. With respect to this plane, the reflected ray lies in a plane which isthe same as the plane of incidence
  52. 52The ratio of the speed of light in a vacuum to the speed of light in a material is calledThe index of refraction
  53. 53Th fact that light of different colors bend through different angles at an optical boundary is known aschromatic dispersion
  54. 54The angle of incidence which causes reflected light to be totally polarized is calledBrewster's angle

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FlashCards sobre Untitled, criado por akabertbud em 10-05-2013.
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akabertbud
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