Light
Light that is produced by a chemical reaction.
Chemiluminescence
The 4 characteristics of plane mirrors are... (LOST)
Location: Same
Orientation: Upright
Size: Same
Type: Virtual
Refraction is the bending of light as it travels from one ____________ to another.
A ____ lens is thicker in the middle and thinner on the edges.
converging
Light emitted from a material at a high temperature.
Incandescence
The 2 laws of reflection are...
(1) the incident ray, the reflected ray, and the normal always lie on the same plane and (2) the angle of reflection is always equal to the angle of incidence
The ration of the speed of light in a vacuum to the speed of light in a given medium is called the...
Index of refraction (n)
The dispersion of light through the edges of a lens is called...
Chromatic Aberration
General term for the emission of light by a material or an object that has not been heated. Different types of light are included in this category of light.
Luminescence
The _________ is twice the focal length, and the _________ is where the mirror meets the principal axis.
- Centre of curvature
- Vertex
What are the 2 conditions for there to be total internal reflection (TIR)?
- Light needs to be traveling from a more dense into a less dense medium
- The angle of incidence needs to be greater than the critical angle
The image of a diverging lens ALWAYS has these 4 characteristics (LOST):
O: Upright
S: Smaller
T: Virtual
Light emitted due to exposure of the source to ultraviolet light, and that continues to be emitted for some time in the absence of the ultraviolet light
Phosphorescence
If an object has a height of 4cm and its upright image has a height of 2cm, what is the magnification of the image?
0.5 (no units!)
A rainbow is an arc of colours caused by ______, ______, and ______ (not in particular order) of the sun's rays as they pass though raindrops.
reflection, refraction, and dispersion
An object 8.5cm high is placed 28 cm from a converging lens. The focal length is 12cm. What is the image distance?
di = 21cm
Light emitted after exposure to UV light
Fluorescence
With a concave mirror, if the object is between F and C, the characteristics (LOST) of the image will be:
L: further
O: inverted
S: bigger
T: real
An optical effect caused by the bending of light rays passing through layers of air that have extremely different temperatures is called...
A mirage
If the object is between F and the lens, the image will have the following 4 characteristics (LOST):
L: Further
O: Upright
S: Bigger
T: Virtual