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Unit 13 Quiz#3

Equations:

The diagram below shows a convex lens. The principal axis, focal point, and "center of curvature" (2F) are shown. The region on both sides of the lens is divided into twelve sections (labeled M, N, P, Q, R, S, T, U, V, W, X and Z). Five objects (labeled 1, 2, 3, 4, and 5) are shown at various locations about the lens. Use the diagram to answer the following six questions.

1. The image of object 1 would be located in section ______.

M

N

P

Q

R

S

T

U

V

W

X

Z

Useful Web Links

Ray Diagrams for Converging Lenses (15 seconds)

Object-Image Relations for Converging Lenses (9 seconds)

 

2. The image of object 2 would be located in section ______.

M

N

P

Q

R

S

T

U

V

W

X

Z

Useful Web Links

Ray Diagrams for Converging Lenses (15 seconds)

Object-Image Relations for Converging Lenses (9 seconds)

 

3. The image of object 3 would be located in section ______.

M

N

P

Q

R

S

T

U

V

W

X

Z

Useful Web Links

Ray Diagrams for Converging Lenses (15 seconds)

Object-Image Relations for Converging Lenses (9 seconds)

 

4. The image of object 4 would be located in section ______.

M

N

P

Q

R

S

T

U

V

W

X

Z

Useful Web Links

Ray Diagrams for Converging Lenses (15 seconds)

Object-Image Relations for Converging Lenses (9 seconds)

 

5. The image of object 5 would be located in section ______.

M

N

P

Q

R

S

T

U

V

W

X

Z

Useful Web Links

Ray Diagrams for Converging Lenses (15 seconds)

Object-Image Relations for Converging Lenses (9 seconds)

 

6. The lens would cause virtual images to be formed of object(s) ________.

a. 1, 2, and 4

b. 1, 2, and 3

c. 3 and 5

d. 4 and 5

e. 4 only

Useful Web Links

Ray Diagrams for Converging Lenses (15 seconds)

Object-Image Relations for Converging Lenses (9 seconds)

 

7. Which of the following statements would not be true of virtual images?

  1. Virtual images are located on the same side of the lens as the object.
  2. Virtual images are formed when light rays diverge after passing through a lens.
  3. Virtual images of a right-side up object would be right-side up.
  4. Virtual images can be projected on a screen.

Useful Web Links

Object-Image Relations for Converging Lenses (9 seconds)

 

8. Which of the following optical devices is not capable of forming a virtual image?

a. Plane mirror

b. Concave Mirror

c. Convex Mirror

d. Concave Lens

e. All four of the above devices are capable of producing virtual images.

Useful Web Links

Image Characteristics for Plane Mirrors (6 seconds)

Image Characteristics for Concave Mirrors (7 seconds)

Image Characteristics for Convex Mirrors (7 seconds)

Converging Lens Images (9 seconds)

 

9. When an object is located at the focal point of a concave mirror, then ...

  1. the image is located at the focal point on the same side of the mirror.
  2. the image is located at the focal point on the opposite side of the mirror.
  3. the image is located at the center of curvature on the same side of the mirror.
  4. the image is located at the center of curvature on the opposite side of the mirror.
  5. there is no image.

Useful Web Links

Image Characteristics for Concave Mirrors (7 seconds)

 

10. Diffuse reflection occurs because

  1. different wavelengths of light have different indices of refraction.
  2. the angle of incidence is greater than the critical angle.
  3. light striking the outside portions of the mirror does not pass through the focal point.
  4. rough surfaces are irregularly shaped, causing rays to have different incident angles.
  5. reflected light does not always follow the law of reflection.

Useful Web Links

Specular vs. Diffuse Reflection (22 seconds)

 

11. Which one of the following phemomena does not illustrate the phenomenon of dispersion?

  1. rainbow formation
  2. refraction of white light by a triangular prism
  3. chromatic aberration
  4. total internal reflection

 

 

12. Which one of the following statements is a true statement about total internal reflection (TIR)?

  1. TIR explains why a person on a far-off shore is unable to see a fish beneath clear water.
  2. TIR always occurs when light passes from a more to a less dense material.
  3. TIR always occurs when light passes from a more to a less dense material.
  4. TIR occurs when the angle of incidence is less than the critical angle.

Useful Web Links

Total Internal Reflection (13 seconds)

The Critical Angle (10 seconds)

 

13. The diagram at the right shows parallel incident rays striking a concave mirror. This diagram illustrates a phenomenon known as

  1. chromatic aberration
  2. spherical aberration
  3. diffuse reflection
  4. polaroid filtration
  5. malfocused reflection

 

Useful Web Links

Spherical Aberration (6 seconds)

Specular vs. Diffuse Reflection (22 seconds)

Polarization (17 seconds)

 

14. The convex lens on Noah Formula's camera has a focal point of 35 mm. While on vacation, the camera is used to take a picture of a 1.00-meter high grizzly bear located a distance of 40.0 meters from the camera lens. If the image is to be focused upon the film, then what must be the distance from the lens to the film? How tall will the image of the bear be? (Note: 1 m = 1000 mm) PSYW

Useful Web Links

The Mathematics of Lenses (7 seconds)

 

15. Consider the plane mirror below. Six objects (labeled A, B, C, D, E, and F) are located in front of the mirror. Which images of the six objects can be seen from the indicated eye position? Clearly circle all objects whose images can be seen. Support your answer with either an intelligent explanation or a clearly constructed diagram.

Useful Web Links

What Portion of a Mirror is Required to View an Image? (7 seconds)

 

16. A ray of light is traveling through air (n=1.00) towards a lucite block (n=1.40). Trace the path of the light ray through the lucite block shown in the diagram below. Use Snell's law and be very accurate. Indicate all angles of incidence and angles of refraction on the diagram. For full credit, show all your work.

Useful Web Links

Ray Tracing and Problem-Solving (15 seconds)

 

 

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© Tom Henderson, 1996-1998


Glenbrook South High School.

Last updated on 4/29/99.