1. A beam of light of wavelength 550 nm traveling in air is incident on a slab of transparent material. The incident beam makes an angle of 40.0° with the normal, and the refracted beam makes an angle of 26.0° with the normal. Find the index of refraction of the material.
· 1.47
o 0.68
o 0
o No correct answer
o All answer are correct
2. A light ray of wavelength 589 nm traveling through air is incident on a smooth, flat slab of crown glass at an angle of 30.0° to the normal, as sketched in Figure. Index of refraction for crown glass equals to 1.52. Find the angle of refraction. 
· 19.2°
o No correct answer
o All answer are correct
o 0
o 10.8°
3. A laser in a compact disc player generates light that has a wavelength of 780 nm in air. Find the speed of this light once it enters the plastic of a compact disc (n = 1.55).
· 1.94x108 m/s
o 0.65 m/s
o 194x1010 m/s
o No correct answer
o All answer are correct
4. Find the critical angle for an air–water boundary. (The index of refraction of water is 1.33.)
· 48.8°
o 1.33°
o No correct answer
o All answer are correct
o 0.752°
5. An anti-shoplifting mirror, as shown in Figure, shows an image of a woman who is located 3.0 m from the mirror. The focal length of the mirror is -0.25 m. Find the position of her image. 
· -0.23 m
o -0.23 cm
o 0.23 m
o 0.23 cm
o No correct answer
6. An anti-shoplifting mirror, as shown in Figure, shows an image of a woman who is located 3.0 m from the mirror. The focal length of the mirror is -0.25 m. Find the magnification of the image. 
· 0.077
o -0.077
o 13.04
o -13.04
o No correct answer
7. A small fish is swimming at a depth d below the surface of a pond. What is the apparent depth of the fish, as viewed from directly overhead? 
· -0.752 d
o 0.752 d
o 1.33d
o -1.33d
o No correct answer
8. A viewing screen is separated from a double-slit source by 1.2 m. The distance between the two slits is 0.030 mm. The second-order bright fringe (m = 2) is 4.5 cm from the center line. Determine the wavelength of the light.
· 560 nm
o 560 mkm
o 380 nm
o 380 mkm
o no correct answer
9. A viewing screen is separated from a double-slit source by 1.2 m. The distance between the two slits is 0.030 mm. The second-order bright fringe (m = 2) is 4.5 cm from the center line. Calculate the distance between adjacent bright fringes.
· 2.2 cm
o 0 m
o 2.2 m
o 2.2 mkm
o no correct answer
10. When a gaseous element is raised to a very high temperature, the atoms emit radiation having discrete wavelengths. The set of vavelengths for a given element is called its atomic spectrum. Two strong components in the atomic spectrum of sodium have wavelengths of 589.00 nm and 589.59 nm. What resolving power must a grating have if these wavelengths are to be distinguished?
o no correct answer
· 999
o 0.999
o 1
o 666
11. When a gaseous element is raised to a very high temperature, the atoms emit radiation having discrete wavelengths. The set of vavelengths for a given element is called its atomic spectrum. Two strong components in the atomic spectrum of sodium have wavelengths of 589.00 nm and 589.59 nm. To resolve these lines in the second-order spectrum. How many slits of the grating must be illuminated?
o no correct answer
· 500
o 999
o 300
o 1
12. The image, shown in this picture is: 
· real, inverted
o virtual, upright, reduced
o Virtual, upright, increased
o Real, upright, reduced
o No correct answer
13. The image, shown in this picture is: 
o real, inverted
o virtual, upright, reduced
· Virtual, upright, increased
o Real, upright, reduced
o No correct answer
14. The image, shown in this picture is: 
o real, inverted
· virtual, upright, reduced
o Virtual, upright, increased
o Real, upright, reduced
o No correct answer
15. A converging lens of focal length 10.0 cm forms images of objects placed 30.0 cm from the lens. Describe the obtained image.
· real, inverted, reduced
o virtual, upright, increased
o Real, upright, reduced
o virtual, upright, reduced
o no correct answer
16. A converging lens of focal length 10.0 cm forms images of objects placed 10.0 cm from the lens. Describe the obtained image.
o real, inverted, reduced
o virtual, upright, increased
o Real, upright, reduced
o virtual, upright, reduced
· no correct answer
17. A converging lens of focal length 10.0 cm forms images of objects placed 5.0 cm from the lens. Describe the obtained image.
o real, inverted, reduced
· virtual, upright, increased
o Real, upright, reduced
o virtual, upright, reduced
o no correct answer
18. A diverging lens of focal length 10.0 cm forms images of objects placed 30.0 cm from the lens. Describe the obtained image.
o real, inverted, reduced
o virtual, upright, increased
o Real, upright, reduced
· virtual, upright, reduced
o no correct answer
19. A diverging lens of focal length 10.0 cm forms images of objects placed 10.0 cm from the lens. Describe the obtained image.
o real, inverted, reduced
o virtual, upright, increased
o Real, upright, reduced
· virtual, upright, reduced
o no correct answer
20. A diverging lens of focal length 10.0 cm forms images of objects placed 5.0 cm from the lens. Describe the obtained image.
o real, inverted, reduced
o virtual, upright, increased
o Real, upright, reduced
· virtual, upright, reduced
o no correct answer
21. A man stands with his nose 8 cm from a concave shaving mirror of radius 32 cm. The distance from the mirror to the image of his nose is:
o 8 cm
o 12cm
· 16cm
o 18cm
o 20cm
22. A ball is held 50 cm in front of a plane mirror. The distance between the ball and its image is:
· 100 cm
o 150 cm
o 200 cm
o 0
o 50 cm
23. As an object is moved from the center of curvature of a concave mirror toward its focal point its image:
o remains virtual and becomes larger
o remains virtual and becomes smaller
· remains real and becomes larger
o remains real and becomes smaller
o remains real and approaches the same size as the object
24. The image of an erect candle, formed using a convex mirror, is always:
o virtual, inverted, and smaller than the candle
o virtual, inverted, and larger than the candle
o virtual, erect, and larger than the candle
· virtual, erect, and smaller than the candle
o real, erect, and smaller than the candle
25. At what distance in front of a concave mirror must an object be placed so that the image and object are the same size:
o a focal length
· half a focal length
o twice a focal length
o less than half focal length
o more than twice a focal length
26. A point source is to be used with a concave mirror to produce a beam of parallel light.The source should be placed:
o as close to the mirror as possible
o at the center of curvature
o midway between the center of curvature and the focal point
· midway between the center of curvature and the mirror
o midway between the focal point and the mirror
27. A concave mirror forms a real image that is twice the size of the object.If the object is 20 cm from the mirror, the radius of curvature of the mirror must be about:
o 13 cm
o 20 cm
· 27 cm
o 40 cm
o 80 cm
o a neutron
28. A source emits monochromatic light of wavelength 495 nm in air. When the light passes through a liquid, its wavelength reduces to 434 nm. What is the liquid’s index of refraction?
o 1.26
o 1.49
· 1.14
o 1.33
o 2.03
29. What happens to a light wave when it travels from air into glass?
o Its speed remains the same
o Its speed increases
o Its wavelength increases
o Its wavelength remains the same
· Its frequency remains the same
30. An object is located 50.0 cm from a converging lens having a focal length of 15.0 cm. Which of the following statements is true regarding the image formed by the lens?
o It is virtual, upright, and larger than the object
o It is real, inverted, and smaller than the object
o It is virtual, inverted, and smaller than the object
· It is real, inverted, and larger than the object
o It is real, upright, and larger than the object
31. When an image of the object is formed by a converging lens, which of the following statements is ALWAYS true? More than one statement may be correct.
o The image is virtual
o The image is real
o The image is upright
o The image is inverted
· None of those statements is ALWAYS true
32. A converging lens made of crown glass has a focal length of 15.0 cm when it used in air. If lens is immersed in water, what is its focal length?
o Negative
· Less than 15.0 cm
o Equal to 15.0 cm
o Greater than 15.0 cm
o None of those answers
33. A plane monochromatic light wave is incident on a double-slit as illustrated in Figure. As the viewing screen is moved away from the double slit, what happens to the separation between the interference fringes on the screen? 
· It increases
o It decreases
o It remains the same
o It may increase or decrease, depending on wavelength of the light
o More information is required
34. Wave optics deals with phenomena of
o Reflection
o Refraction
o total internal reflection
· interference,polarization,diffraction
o electromagnetic induction
35. Diffraction at a single slit occurs. Choose the condition of maximum
o dsinj= nl/2, n=±1,2,3…;
· dsinj= (2n+1)l/2;
o 2n t=ml
o x=nl;
o x= (2n+1)l/2
36. When we divide a wave front into Fresnel zones, the slant height of each cone is longer than preceding one by
o 0
· l/2
o l
o 3/2l
o 2l
37. Two ray of light interfere constructively if their path length differs by how much?
o 0
o λ/4;
· nl;
o (2n+1)l/2;
o λ/3
38. What interference pattern was observed by Young in his double slit experiment?
· Equidistant bright and dark bands
o Oval fringes
o Rings
o Broad colored fringes of arbitrary shape
o All points have the same intensity
39. Newton's rings are result of
· Interference
o Diffraction
o Reflection
o Polarization
o Dispersion
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