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### 26 Matching questions

1. If atmospheric refraction did not occur, how would the apparent time of sunrise and sunset be changed?
2. A film projector produces a 1.51 m image of a horse on a screen. If the projector lens is 4.00 m from the screen and the size of the horse on the film is 1.07 cm, what is the magnitude of the magnification of the image?
3. When a light ray passes from water (n= 1.333) into diamond (n= 2.419) at an angle of 45°, its path is
4. A virtual image has a ___ image distance (q) and is located in ___ of the lens.
5. A beam of light in air is incident at an angle of 35° to the surface of a rectangular block of clear plastic (n= 1.49). What is the angle of refraction?
6. What type of image does a converging lens produce?
7. All of the following images can be formed by a converging lens except which one?
8. An object is placed 20.0 cm from a thin converging lens along with the axis of the lens. If a real image forms behind the lens at a distance of 8.00 cm from the lens, what is the focal length of the lens?
9. In what direction does a parallel ray from an object proceed after passing through a converging lens?
10. When light passes at an angle to the normal from one material into another material in which its speed is higher,
11. The focal length for a converging lens is
12. How many focal point and focal lengths do converging and diverging lenses have?
13. In what direction does a focal ray from an object proceed after passing through a diverging lens?
14. When light passes at an angle to the normal from one material into another material in which its speed is lower,
15. When a light ray passes from zircon (n= 1.923) into fluorite (n= 1.434) at an angle of 60°, its path is
16. An object is placed 14.0 cm from a diverging lens. If a virtual image appears 10.0 cm from the lens on the same side as the object, what is the focal length of the lens?
17. What type of image is formed when rays of light actually intersect?
18. Which of the following describes what will happen to a light ray incident on a glass-to-air boundary at greater than the critical angle?
19. Refraction is the bending of a wave disturbance as it passes at an angle from one ___ into another.
20. Carbon tetrachloride (n= 1.46) is poured into a container made of crown glass (n= 1.52). If a light ray in the glass is incident on the glass-to-liquid boundary and makes an angle of 30.0° with the normal, what is the angle of the corresponding refracted ray with respect to the normal?
21. An object that is 18 cm from a converging lens forms a real image 22.5 cm from the lens. What is the magnification of the image?
22. The ___ of light can change when light is refracted because the medium changes.
23. In what direction does a parallel ray from an object proceed after passing through a diverging lens?
24. A ray of light in air is incident on an air-to-glass boundary at an angle of exactly 30.0° with the normal. If the index of refraction of the glass is 1.65, what is the angle of the refracted ray within the glass with respect to the normal?
25. Atmospheric refraction of light rays is responsible for which of the following effects?
26. Which is an example of refraction?
1. a The ray exits the lens parallel to the principal axis.
2. b 18.0°
3. c always negative.
4. d real, upright, and magnified
5. e 5.71 cm
6. f medium
7. g bent toward the normal.
8. h 23°
9. i real
10. j 141
11. k A fish appears closer to the surface of the water than it really is when observed from a riverbank.
12. l -1.25
13. m The ray passes through the focal point, F.
14. n Sunrise would be later, and sunset would be earlier.
15. o bent away from the normal.
16. p mirages
17. q -34 cm
18. r wavelength
19. s it is bent away from the normal to the surface.
20. t negative, front
21. u 31.4°
22. v total internal reflection
23. w real of virtual
24. x The ray is directed away from the focal point, F.
25. y it is bent toward the normal to the surface.
26. z two, one