Chapter 23 Test - Craig Fisher | Laabri | Nneɛma a ɛma wotumi yɛ ade

MULTIPLE CHOICE

-Choose the correct answer by clicking on your answer choice. Only one answer is correct. (2 pts. each)

2

The surface of a plane mirror

A. is flat.

B. curves inward.

C. curves outward.

D. is part flat and part curved.

2

The surface of a convex mirror

A. is flat.

B. curves inward.

C. curves outward.

D. is part flat and part curved.

2

The surface of a concave mirror

A. is flat.

B. curves inward.

C. curves outward.

D. is part flat and part curved.

2

Which of the following is true of a person who is farsighted?

A. Things that are nearby look blurry.

B. A concave lens can correct the problem.

C. Distant objects are focused in front of the retina.

D. The eye is too long.

2

Which of the following is true of a person who is nearsighted?

A. Things that are nearby look blurry.

B. A convex lens can correct the problem.

C. Distant objects are focused in front of the retina.

D. The eye is too short.

2

Which of the following is true of a person who has color deficiency?

A. The person can see all colors of visible light.

B. The cones in the person’s retina do not work properly.

C. This vision problem can be corrected through surgery.

D. The person can tell the difference between shades of red and green.

2

Surgical eye correction uses a laser to reshape a person’s

A. lens.

B. pupil.

C. retina.

D. cornea.

2

An optical instrument that uses lenses to see detailed images of large, distant objects is a

A. digital camera.

B. light microscope.

C. reflecting telescope.

D. refracting telescope.

2

An optical instrument used to see magnified images of tiny nearby objects is a

A. digital camera.

B. light microscope.

C. reflecting telescope.

D. refracting telescope.

2

An optical instrument that uses light sensors to record images is a

A. digital camera.

B. light microscope.

C. reflecting telescope.

D. refracting telescope.

2

Intense light of only one color is produced by a(n)

A. laser.

B. light telescope.

C. optical fiber.

D. polarizing filter.

2

A hologram is made by using

A. satellites.

B. laser light.

C. optical fibers.

D. polarized light.

2

The complete reflection of light along the inside surface of optical fibers is called

A. radiation.

B. polarization.

C. stimulated emission.

D. total internal reflection.

2

Polarized light consists of

A. light waves that are coherent.

B. light waves that are only one color.

C. light waves that vibrate in only one plane.

D. light waves that vibrate perpendicularly to each other.

2

A type of communications technology that uses radio waves is a

A. cordless telephone.

B. cellular telephone.

C. satellite television.

D. Global Positioning System

2

The aperture of a camera works most like an eye’s

A. lens.

B. iris.

C. pupil.

D. cornea.

2

Light is kept inside an optical fiber due to

A. amplification.

B. radiation.

C. stimulated emission.

D. total internal reflection.

2

Polarizing filters produce light waves that

A. have a single color.

B. vibrate in only one plane.

C. vibrate at a low frequency.

D. possess tremendous energy.

2

Which of the following is a true statement about the lens of the eye?

A. It forms a virtual image.

B. It is thinner in its middle than at its edge.

C. It functions like a convex mirror to reflect light onto the retina.

D. It changes thickness to focus on objects at various distances.

2

A convex mirror and a concave lens both cause light rays to

A. slow down.

B. spread apart.

C. gain energy.

D. form blurry images.

2

Which one of the following problems would a driver who has red-green color deficiency face?

A. reading stop signs

B. seeing double

C. distinguishing between stop and go lights

D. checking the rear-view mirror

2

What type of light does a laser produce?

A. light that spreads out

B. light that doesn’t spread out

C. light in a tube

D. filtered light

2

What is a thin, glass thread used to send light over long distances?

A. a laser

B. an optical fiber

C. a hologram

D. a polarizing filter

2

Which of the following parts of the eye refracts light?

A. pupil

B. iris

C. lens

D. retina

2

A vision problem that happems when light is focused in front of the retina is

A. farsightedness.

B. nearsightedness.

C. color deficiency.

D. None of the above.

COMPLETION

-Complete the following questions by selecting the correct answer from the word bank. Misspelled words will be marked as incorrect. Some answers may be used more than once, others may not be used at all. (2 pts. each)

Word Bank