Refraction, Lenses, Color

1. Refraction, Lenses, Color

2. The bending of light as it changes speed when entering a different medium is • reflection • refraction • critical angle • diffraction [Default] [MC Any] [MC All]

3. As light enters a more optically dense medium, • it light bends away from the normal line. • it bends toward the normal line. • it goes straight through (doesn’t bend). • all the light is reflected. [Default] [MC Any] [MC All]

4. As light enters a less optically dense medium, • it speeds up. • it slows down. • it maintains the same speed. [Default] [MC Any] [MC All]

5. The critical angle is the incident angle when the refracted angle is(choose all that apply!) • a right angle • parallel to the boundary • tangent to the boundary • 90º [Default] [MC Any] [MC All]

6. Fiber optics is an example that uses • refraction • diffraction • total internal reflection • resonance [Default] [MC Any] [MC All]

7. When the incident angle exceeds the critical angle, • most of the light is reflected. • all of the light is refracted. • the refracted angle is 90º • all the light is reflected back into the incident medium. [Default] [MC Any] [MC All]

8. The emission of electrons from a surface when light of certain frequencies shines on the surface is • refraction • total internal reflection • the photoelectric effect • diffraction [Default] [MC Any] [MC All]

9. Which of the following is/are true of a convex lens (choose all that apply)? • A convex lens is a converging lens • A convex lens is a diverging lens. • A convex lens has a positive focal length. • A convex lens has a negative focal length [Default] [MC Any] [MC All]

10. The image formed by a convex lens when the object is beyond twice the focus is (choose all that apply) • real • virtual • larger • smaller [Default] [MC Any] [MC All]

11. The image formed by a concave lens is (choose all that apply) • real • virtual • smaller • larger • upright [Default] [MC Any] [MC All]

12. A negative image distance indicates that the image is (choose all that apply) • on the opposite side of the lens as the object • on the same side of the lens as the object • virtual • real [Default] [MC Any] [MC All]

13. The primary colors of light are • magenta, cyan, yellow • red, green, blue • magenta, yellow, blue • red, green, yellow [Default] [MC Any] [MC All]

14. The secondary colors of light are • magenta, cyan, yellow • red, green, blue • magenta, yellow, blue • red, green, yellow [Default] [MC Any] [MC All]

15. Red and blue light combined result in • cyan light. • yellow light. • magenta light. • purple light. [Default] [MC Any] [MC All]

16. Complementary colors of light and pigment are • green and magenta • magenta and blue • blue and yellow • red and cyan [Default] [MC Any] [MC All]

17. Complementary colors of light make _____light while complementary colors of pigment make ____ pigment. • white, black • black, white • magenta, cyan • yellow, blue [Default] [MC Any] [MC All]