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SNC 2D
Optics Review
Key Terms – Define the following terms.
Angle of incidence
Focal length
Virtual image
Angle of reflection
Focal point
Pinhole camera
Angle of refraction
Image
Plain mirror
Critical angle
Luminous
Principal axis
Center of curvature
Incident ray
Rectilinear propagation
Chemiluminescene
Index of Refraction
Reflected ray
Concave
Law of Reflection
Refraction
Converge
Real image
LOST
Converging lens
Medium
Speed of light
Convex
Diffuse reflection
Regular reflection
Optical Density
Normal
Total internal refraction
Diverge
Object
Non-luminous
Diverging lens
Wavelength
Vertex
Electromagnetic spectrum
Virtual image
1.
Give two examples of luminous and non-luminous objects.
2.
What is the law of reflection?
3.
What is the difference between specular and diffuse reflection?
4.
How does the object distance compare to image distance in a plane mirror?
5.
Complete a ray diagram showing the image’s object and the path that the important
rays of light take to reach your eye.
eye  •
6.
How can you find the focal point of a concave mirror?
7.
Use a ray diagram to show the image characteristics for a concave mirror when:
(a)
an object is placed outside 2F.
(d)
an object is placed on F.
(b)
an object is placed at 2F
(e)
an object is placed inside F.
(c)
an object is placed between F
and 2F.
8.
Use a ray diagram to show the image characteristic for a convex (diverging) mirror
when an object is placed between F and 2F
9.
The index of refraction of diamond is 2.54. Explain what this tells us about the speed
of light as is travels through diamond.
10.
The index of refraction of water is 1.33. Determine the speed of light in water.
11.
Light travels at 1.24 x 108 m/s through a substance. What is the index of refraction,
and what is the substance?
12.
Use the mirror equation and magnification equation to determine the height of the
image given the following.
(a)
An object that is +3 m tall placed +5 m in front of a concave mirror with a focal
length of +3 m.
(b)
An object that is +3 m tall placed +5 m in front of a convex mirror with a focal
length of -3 m.
13.
What does it mean when di is a negative number when dealing with mirrors?
14.
What is total internal reflection? Use a diagram to explain.
15.
Which medium has a greater index of refraction in the following situations? In each
case medium 1 is on top, medium 2 is on the bottom. The normal is shown.
16.
Medium B has the highest index of refraction, medium A the second highest, and
medium C the lowest. Draw a ray of light as it travels from medium A to B to C.
A
B
C
17.
At which angle(s) of incidence will no refraction occur?
18.
What happens to the brightness of the reflected and refracted rays as the angle of
incidence increases from 0º
19.
20.
Use a ray diagram to show the image characteristics for a converging lens when:
(a)
an object is placed outside 2F.
(d)
an object is placed on F.
(b)
an object is placed at 2F
(e)
an object is placed inside F.
(c)
an object is placed between F and 2F.
Determine the distance and height of an image that of a +5 cm tall object placed +10
cm from a converging lens. The focal length of the lens is 6 cm.
21.
Determine the image height and magnification of a 7.8 cm tall object placed 12.0 cm
away from a converging lens with a focal length of 20.0 cm. Is the image real or virtual?
22.
What does it mean when di is negative when dealing with converging lenses?
23.
What does it mean when hi is negative when dealing with converging lenses?