Physics Study Guide
Chapter 14 

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1. Define each of the following:
        a) diffuse light rays
        b) specular light rays
        c) virtual image
        d) real image

2. What would happen if you look at a light through the lenses from two polarizing sunglasses that were overlapped at right angles to one another?

3. What color does blue pigment subtract from white light?

4. What color does red pigment subtract from white light?

5. What color does yellow pigment subtract from white light?

6. When red and green light shine on the same place on a piece of white paper, what color does the spot appear to be?

7. When blue and red light shine on the same place on a piece of white paper, what color does the spot appear to be?

8. What can be used to reduce the occurrence of spherical aberration?

9. Describe the image of a concave mirror when the object’s distance from the mirror is less than the focal-point distance?

10. If an object is located more than two times the focal distance from a mirror, would the image be real or virtual? Would it be enlarged or reduced in size? Would it be upright or inverted?

11. Describe the image of an object produced by a flat mirror.

12. If you stand 2.5 m in front of a flat mirror, how far away from you would your image be in the mirror?

13. If a light ray strikes a flat mirror at an angle of 56E from the normal, where would the reflected ray be?

14. If you move three times as far away from a light source, how does the brightness at the new distance compare with that at the old distance? What would happen if you move twice as far away?

15. What is the relationship between the speeds of different wavelengths of electromagnetic radiation?

16. Which portion of the electromagnetic spectrum is used in each of the following:
        a) aircraft navigation   
        b) television
        c) sterilize medical instruments
        d) identify fluorescent materials

17. The focal length of a convex lens is 17 cm. A candle is placed 34 cm in front to the lens.  Make a ray diagram to find the location of the image. (Scale should be 1 block represents 2 cm.)

18. A concave mirror has radius of 25 mm. If the mirror is held 31 mm away from an object, what will the magnification of the resulting image be?

19. A ball with a diameter of 10.3 cm is placed 9.25 cm in front of a concave mirror of 13.5 cm focal length.
        a) Where will the image of the ball appear?
        b) What will be the diameter of the image?

20. A convex mirror with a focal length of 15.0 cm creates a virtual image 12.0 cm away on its principal axis. How far from the mirror is the corresponding object?

21. What is the wavelength of an infrared wave with a frequency of 4.2 x 1014 Hz?