Exam 3 Name: 14. The medium that is required to propagates an electromagnetic wa

Question

Exam 3 Name: 14. The medium that is required to propagates an electromagnetic wave is: a. Ether b. Glass C. Air d. Photons e. None of the Above 15. An object in front of a lens produces a re al image. Which is correct for the image? a. Inverted b. Virtual c. Upright d. Located in the Front of the lens e. All of the Above 16. Which of the following are converging lenses? If none, answer E 17. If an object is placed less than a focal distance away from a converging lens, the image will be a. real, larger, i b. virtual, larger, upright c. real, smaller, inverted d. virtual, smaller, upright e. real, smaller, upright 18. If an object is placed further than a focal distance away from a diverging lens, the image will be a. real, larger, inverted b. virtual, larger, upright c. real, smaller, inverted d. virtual, smaller, upright e. real, smaller, upright 19. When an incident ray of light strikes the surface of an object the ray can be a. Reflected b. Scattered c. Absorbed d. Transmitted e. All of the Above 20. When an object moves toward Earth the light emitted from the object is shifted: a. Red b. Blue c. Not at al d. Rightward e. Leftward

Explanation / Answer

14) e) None of the above.

Because, light does not need any medium to propogate

15) a) inverted

because, a real image is always inverted.

16) C and D

17) b) virtua, larger,upright

18) d) virtual,smaller, upright

19) e) all of the above

20) b) blue

because, wavelength of the light decreases.

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