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Unit 13/14 Quiz#2

Equations:

ni x sin (Thetai) = n r x sin (Thetar)

 

The diagram below shows a spherical surface which is silvered on both sides. Thus, the surface serves as double-sided mirror, with one of the sides being the concave and one being the convex side. The principal axis, focal point, and center of curvature are shown. The region on both sides of the mirror is divided into eight sections (labeled M, N, P, Q, R, S, T, and W). Five objects (labeled 1, 2, 3, 4, and 5) are shown at various locations about the double-sided mirror. 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

W

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

M

N

P

Q

R

S

T

W

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

M

N

P

Q

R

S

T

W

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

M

N

P

Q

R

S

T

W

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

M

N

P

Q

R

S

T

W

6. The double-sided mirror would cause virtual image to be formed of objects ________.

a. 1, 2, and 4

b. 1, 2, and 3

c. 3 and 5

d. 4 and 5

e. 3 only

 


Useful Web Links

Image Characteristics for Concave Mirrors (9 seconds)

Image Characteristics for Convex Mirrors (7 seconds)

 

 

7. Calculate the critical angle for light traveling from diamond (n=2.42) into water (n=1.33). PSYW


Useful Web Links

The Critical Angle (10 seconds)

 

8. Several rays of light are incident upon a piece of paper as shown in the diagram below. After striking the paper, the light rays travel in the indicated direction.

This diagram illustrates the phenomenon known as

a. total internal reflection

b. dispersion

c. diffuse reflection

d. interference

e. optical fibers


Useful Web Links

Total Internal Reflection (13 seconds)

Specular vs. Diffuse Reflection (22 seconds)

Interference of Waves (14 seconds)

Optical Fibers (13 seconds)

 

9. Light traveling through air (n = 1.00) is incident upon a triangular block made of an unknown material. The path of the light through the material is shown in the diagram below. Using a protractor and a calculator, determine the index of refraction of the unknown material. To receive credit, show the necessary measurements on the diagram and show all your work.

 


Useful Web Links

Determination of n Values (10 seconds)

 

10. Using complete sentences, explain why the light did not bend upon exiting the unknown material as shown in the above diagram.


Useful Web Links

The Secret of the Archer Fish (8 seconds)

 

 

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© Tom Henderson, 1996-1998


Glenbrook South High School.

Last updated on 10/13/98.