Name (printed) _______________________________
LENS RAY DIAGRAMS
• Make ray diagrams to locate the corresponding images. Draw the image in as an arrow.
• For each image, indicate the:
- Location of the image, L (on the same side of the lens as the object, between f and 2f, at 2f, beyond 2f)
- Orientation, O (upright or inverted)
- Relative size, S (smaller, same, larger)
- Type, T (real or virtual)
List two similarities you
see between your drawing
above and this photograph
(taken by Simon Blockley,
Class of 2007).
1.
2.
1
List two similarities you see
between your drawing above
and this photograph (taken by
Alexis Agoustari, Class of
2012).
1.
2.
List two similarities you see
between your drawing below
and this photograph (taken by
Alexander Morris, Class of
2010).
1.
2.
2
GET CHECKED BEFORE MOVING ON
LENS EQUATION PROBLEM SOLVING
In the space below, do the following problems from the hardcover book:
Regular Physics: Page 660 - 663, problems 45, 47, 55, 83
Honors Physics: Page 660 - 662, problems 53, 55, 57, 63, 81
Start each problem with givens (like I taught you) and show all work. For full credit, I must
be able to clearly and quickly follow each step of your work
3
4
GET CHECKED BEFORE MOVING ON
TOTAL INTERNAL REFLECTION
1.
Make necessary measurements to draw the paths of each of the rays shown through the glass and back into
the air. Show necessary measurements and calculations carefully.
air
crown glass
2.
Air
Make necessary measurements to draw the paths of each of the rays shown through the glass and back into
the air. Show necessary measurements and calculations carefully.
flint glass
Substance
5
Air
Water
Fused quartz
Crown glass
Flint glass
Index of
Refraction
1.00
1.33
1.46
1.52
1.63
3.
In the diagram to the right a glass prism is immersed in water.
However, when the glass is in air, the critical angle is 38.7°.
a. What is the index of refraction of the glass?
b. What will the angle of refraction be when the indicated ray exits the
glass prism into the water? Show work carefully.
Water
glass
water
Problem #4 is for Honors Physics only
4.
a.
Use the drawing below to determine the critical angle for light as it moves from fused quartz to water.
Don’t measure it (it’s not drawn to scale).
b.
Calculate the angle labeled “i.” Don’t measure it (it’s not drawn to scale).
water
fused quartz
i
c.
What would happen to the light if the water drop were wiped off the surface of the fused quartz. Why
would this occur?
GET CHECKED BEFORE MOVING ON
6
TOTAL INTERNAL REFLECTION
QUESTIONS AND PROBLEMS
For credit, you must provide a clear and complete explanation for each of the remaining questions.
1. _____ In the diagram to the right, which path would the light take if i was less than
the critical angle?
e
i
d
glass
air
2. _____ In the diagram to the right, which path would the light take if i was greater
than the critical angle?
c
b
a
3. _____ A ray of light originates in medium A and is incident upon medium B. For which sets of values of the
indices of refraction for A and B is total internal reflection not possible (choose all that apply)?
nA
nB
a.
1.36
2.00
b.
1.26
1.15
c.
2.54
1.63
d.
1.28
1.36
e.
1.12
1.06
4. _____ A beam of light in a glass prism is totally internally reflected. If the index of refraction of the glass is
1.5, a possible value of the angle of incidence could be:
a. 40°
b. 50°
c. 60°
d. “a” or “b”
e. “b” or “c”
5.
In the diagrams below, draw the path light would take if i were less than the critical angle (a), if i were
equal to the critical angle (b), if i were greater than the critical angle (c). Explain your drawings below.
a
c
b
i
i
i
glass
glass
glass
air
air
air
7