1. Choose the correct statement:
· total internal reflection occurs only when light is directed from a medium of a given index of refraction toward a medium of lower index of refraction;
o total internal reflection occurs only when light is directed from a medium of a given index of refraction toward a medium of higher index of refraction.
o total internal reflection occurs only when light is directed from a medium of a higher index of refraction toward a medium of lower index of refraction.
o No correct answer
o All answer are correct
2. Choose the correct statement:
· The law of reflection states that for a light ray traveling in air and incident on a smooth surface, the angle of reflection equals the angle of incidence;
o The law of reflection states that for a light ray traveling in air and incident on a smooth surface, the angle of reflection less the angle of incidence;
o The law of reflection states that for a light ray traveling in air and incident on a smooth surface, the angle of reflection more the angle of incidence;
o No correct answer
o All answer are correct
3. Light crossing a boundary as it travels from medium 1 to medium 2 is refracted, or bent. The angle of refraction is defined by the relationship:
· 
o 
o 
o No correct answer
o All answer are correct
4. The index of refraction n of a medium is defined by the ratio:
· 
o 
o 
o No correct answer
o All answer are correct
5. Snell’s law of refraction states that:
· 
o 
o 
o No correct answer
o All answer are correct
6. The critical angle for which total internal reflection occurs at an interface is given by:
· 
o 
o 
o No correct answer
o All answer are correct
7. A real image:
· formed when light rays pass through and diverge from the image point;
o formed when the light rays do not pass through the image point but only appear to diverge from that point;
o No correct answer
o All answer are correct
o Images are located either at a point from which rays of light actually diverge or at a point from which they appear to diverge;
8. A virtual image:
o formed when light rays pass through and diverge from the image point;
· formed when the light rays do not pass through the image point but only appear to diverge from that point;
o No correct answer
o All answer are correct
o Images are located either at a point from which rays of light actually diverge or at a point from which they appear to diverge;
9. The lateral magnification M of an image is defined by equations:
· 
o 
o Equals to zero
o No correct answer
o All answer are correct
10. The mirror equation is described by equation:
· 
o 
o 
o No correct answer
o All answer are correct
11. The image, shown in this picture is: 
· Virtual, upright, reduced
o Real, inverted, reduced
o Virtual, inverted, increased
o Real, upright, reduced
o No correct answer
12. The image, shown in this picture is: 
o Virtual, upright, reduced
· Real, inverted, reduced
o Virtual, inverted, increased
o Real, upright, reduced
o No correct answer
13. The image, shown in this picture is: 
o Virtual, upright, reduced
o Real, inverted, reduced
· Virtual, upright, increased
o Real, upright, reduced
o No correct answer
14. The image, shown in this picture is: 
o Virtual, upright, increased
o Real, inverted, reduced
· Virtual, upright, reduces
o Real, upright, reduced
o No correct answer
15. Show the converging lenses: 
· a), c), d)
o b), e), f)
o b), d), f)
o a), c), e)
o No correct answer
16. Show the diverging lenses:
o a), c), d)
· b), e), f)
o b), d), f)
o a), c), e)
o No correct answer
17. Show the biconvex lens on this figure:
· a)
o b)
o c)
o d)
o e)
18. Show the convex-concave lens on this figure:
o a), c)
o b), e)
· c), e)
o d), f)
o e), a)
19. Show the plano-convex lens on this figure:
o a)
o b)
o c)
· d)
o e)
20. Show the biconcave lens on this figure:
o a)
· b)
o c)
o d)
o e)
21. Show the plano-concave lens on this figure:
o a)
o b)
· f)
o d)
o e)
22. The farsightedness can be corrected by placing:
· a converging lens in front of the eye
o a diverging lens in front of the eye
o it can’t be corrected
o no correct answer
o a converging lens in back of the eye
23. The nearsightedness can be corrected by placing:
o a converging lens in front of the eye
· a diverging lens in front of the eye
o it can’t be corrected
o no correct answer
o a converging lens in back of the eye
24. The ratio of the focal length of a camera lens to the diameter of the lens is called
· the f-number of the lens
o the d-number of the lens
o the e-number of the lens
o the c-number of the lens
o the g-number of the lens
25. In order to observe interference in light waves, the following conditions must be met:
· The sources must be coherent and monochromatic
o The sources must be coherent
o The sources must be monochromatic
o no correct answer
o all answers are correct
26. The condition for constructive interference at point P is
· 
o 
o 
o no correct answer
o all answers are correct
27. The condition for destructive interference at point P is
o
· 
o
o no correct answer
o all answers are correct
28. The intensity at a point in the double-slit interference pattern is
· 
o 
o 
o 
o no correct answer
29. The angles at which the diffraction pattern has zero intensity, corresponding to destructive interference, are given by
· 
o 
o 
o 
o no correct answer
30. Rayleigh’s criterion, which is a limiting condition of resolution, states that
· two images formed by an aperture are just distinguishable if the central maximum of the diffraction pattern for one image falls on the first minimum of the diffraction pattern for the other image.
o two images formed by an aperture impossible to distinguishable.
o two images formed by an aperture are just distinguishable if the central minimum of the diffraction pattern for one image falls on the first minimum of the diffraction pattern for the other image.
o two images formed by an aperture are distinguishable in any situation.
o no correct answer
31. The limiting angle of resolution for a slit of width a is:
· 
o 
o 
o 
o 
32. The condition for intensity maxima in the interference pattern of a diffraction grating for normal incidence is
· 
o 
o 
o 
o 
33. The resolving power of a diffraction grating in the m th order of the diffraction pattern is
· 
o 
o 
o 
o 
34. The equation for Brewster’s law:
· 
o 
o 
o 
o no correct answer
35. An unpolarized light beam is shown on figure:
· 
o 
o 
o 
o no correct answer
36. A linearly polarized light beam is shown on figure:
o 
·
o
o no correct answer
o 
37. An unpolarized light beam incident on a first polarizing sheet, called
· the polarizer
o the analyzer
o the polaroid
o the absorber
o no correct answer
38. An polarized light beam incident on a second polarizing sheet, called
o the polarizer
· the analyzer
o the polaroid
o the absorber
o no correct answer
39. The Malus’s law is:
· 
o 
o 
o 
o no correct answer
40. If two light waves are coherent:
o their amplitudes are the same
o their frequencies are the same
o their wavelengths are the same
· their phase difference is constant
o the difference in their frequencies is constant
41. The relation θincident = θreflected, which applies as a ray of light strikes an interface between two media, is known as:
o Faraday’s law
· Snell’s law
o Ampere’s law
o Cole’s law
o none of these
42. As used in the laws of reflection and refraction, the “normal” direction is:
o any convenient direction
o tangent to the interface
o along the incident ray
o perpendicular to the electric field vector of the light
· perpendicular to the interface
43. When an electromagnetic wave meets a reflecting surface, the direction taken by the reflected wave is determined by:
o the material of the reflecting surface
· the angle of incidence
o the index of the medium
o the intensity of the wave
o the wavelength
44. The index of refraction of a substance is:
o the speed of light in the substance
o the angle of refraction
o the angle of incidence
· the speed of light in vacuum divided by the speed of light in the substance
o measured in radians
45. The units of index of refraction are:
o m/s
o s/m
o radian
o m/s2
· none of these
46. A virtual image is one:
o toward which light rays converge but do not pass through
· from which light rays diverge but do not pass through
o from which light rays diverge as they pass through
o toward which light rays converge and pass through
o with a ray normal to a mirror passing through it
47. When you stand in front of a plane mirror, your image is:
o Real and smaller than you
o real and the same size as you
o virtual and smaller than you
· virtual and the same size as you
48. real, inverted, and the same size as you Please find the Michelson-Morley experiment:
· 
o 
o 
o 
o 
o
49. Please find the experiment for the photoelectric effect:
o 
o
·
o
o
50. Please find the Compton experiment:
o
o 
o 
·
o 
51. Please find the double-slit experiment:
o
o
o
o
·
52. A light ray containing both blue and red wavelengths is incident at an angle on a slab of glass. Which of the sketch in Figure represents the most likely outcome? 
o A
o B
· C
o D
o None of them
53. Light can travel from air into water. Some possible paths for the light ray in the water are shown in Figure. Which path will the light most likely follow? 
o A
o B
· C
o D
o E
54. The index of refraction for water is about 4/3. What happens as a beam of light travels from air into water? c is speed of light.
o Its speed increases to (4/3)c, and its frequency decreases
· Its speed decreases to (3/4)c, and its wavelength decreases by factor of ѕ
o Its speed decreases to (3/4)c, and its wavelength increases by factor of 4/3
o Its speed and frequency remain the same
o Its speed increases to (3/4)c, and its frequency increases
55. What source of radiation is the source of coherent light?
· Laser
o Flashlight bulb
o Candle
o Sun
o Electric bulb
56. Diffraction at single slit occurs. Choose the condition of minimum
· dsinj= nl/2, n=1,2,3…;
o dsinj= (2n+1)l/2;
o 2n t=ml
o x=nl;
o x= (2n+1)l/2
57. Two ray of light interfere destructively if their path length differs by how much?
o 0
o λ/4;
o nl;
· (2n+1)l/2;
o λ/3
58. If angle of incidence of light equals to the Brewster angle what angle reflected and refracted rays make?
o 45°
o 60°
· 90°
o 120°
o 135°
59. What kind of polarized light is radiated by the Sun?
o Partially polarized light
· unpolarized light;
o circular polarized light:
o elliptical polarized light;
o plane polarized light.
60. Polaroid sheets are used to obtain
o emf of induction
o interference pattern;
o diffraction pattern;
· polarized light;
o spectrum.
61. If light is reflected by the surface of a pond it is
o Unpolarized;
· partially polarized in the plane of the surface of the pond;
o partially polarized in the plane perpendicular to the surface of the pond;
o circular polarized;
o elliptical polarized.
62. The path of ray of light between two point is the path that _______ the travel time
· Minimizes
o Maximizes
o Increases
o Decreases
o does not influence
63. When total internal reflection can occur?
o When angle of incidence equals 0°
o When angle of incidence equals 90°
· When light strikes the boundary where the medium beyond is optically less dense;
o When light strikes the boundary where the medium beyond is optically more dense;
o No correct answer
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