Define Terms
Thin lens
Magnification
Light
Lenses/mirror
100
A wave that has both electric and magnetic parts; does not require medium and travels at the speed of light. Red , orange , yellow , green, blue, indigo , violet
What is Electromagnetic Wave What is the order of the seven distinct colors in the visble spectrum
100
Thin lens equation: 1 + 1 = 1 -- -- -- do di F
What is the thin lens equation
100
m=hi = -di -- -- ho do
What is the equation of magnification
100
1. incandescence 2.electric discharge 3. phosphorescence 4. fluorescence 5.bioluminescence 6.tribioluminescence 7. light emmiting Diode 8.chemilumionescence
what are the eight luminous sources ?
100
1.a ray parallel to the principal axis is refracted through the principal focus (F) 2. a ray thorugh the secondary principal frocus is refracted parallel to the principal axis 3. a ray thporugh the optical centre continues straight though without being refracted
what is how to locate a converging lens
200
http://www.youtube.com/watch?v=2P3nKJHO2j0&safety_mode=true&persist_safety_mode=1&safe=active Refraction: the bending or change in direction of light when it travels from one medium to another Reflection : the bouncing back of light from a surface
What is Refraction & reflection
200
the purpose of the thin lens equation is : to use algebra to determine the image characteristics.
What is the thin lens equations purpose
200
when you compare the size of the image with the size of the object
what is the purpose of the magnification equation
200
a line on a diagram representing the direction and path the light is traveling
what is the definition of light rays
200
1.a ray parallel to the principal axis is refracted as if it had come thorugh the principal focus 2. a ray that appears to pass through the secondary principal focus is refracted parallel to the principal axis. 3. a ray thorugh the optical centre continues straight through on its path
what is how to locate a diverging lens
300
Virtual image ; an image form by light coming from an apparent light source , light is not arriving at or coming from the actual image location Real image ; an image that can be seen on a screen as a result of light rays , actually arriving at the image location http://www.youtube.com/watch?v=zNqXtzTcIqE&safety_mode=true&persist_safety_mode=1&safe=active
What is Vitrual image What is real image
300
object distances(do) are positive the focal length (f) is positive for converging lenses and negative for the other (diverging)
what is the following sign conventions... object distances (do) the focal length (f) is positive for which kind of lens and negative for which kind of lens
300
- object ho and image hi heights are positive when measured upward from the principal axis and negative when measured downwards. - magnification (m) is positive for an upright image and negative for an inverted image.
What is the sign conventions of magnification
300
fill in the blanks The sun is ________ , which means that it produces its own light. A __________ source does not produce its own light. and can be seen using reflected light.
what is 1. luminous 2.non-luminous
300
a light ray parallel to the principal axis is reflected thorugh the focus. 2. a light ray through the centre of curvature is reflected back onto itself. 3. a ray through f will relfect parallel to the principal axis . 4. a ray aimed at the vertex will follow the law of relflection
what is how to locate converging mirrors
400
Index of refraction : the ratio of the speed of light in a vacuum to the speed of light in a medium , n= C/V ; this value is also equal to the ratio of the sine of the angle of incidence in a vacuum to the sine of the refracted ray in a medium n=sin
What is index of refraction and its equation what is total internal reflection
400
complete the following word problem : a converging lens has a focal length of 17 cm. a candle is located 48cm from te lens. what type of image will be formed and where will it be located?
what is 1 = 0.038cm -1 -- di di=26cm the image of the candle is real and will be about 26 cm from the lens
400
complete the following word equation a toy of height 8.4 cm is balanced in front of a converging lens an inverted ral image of height 23cm is noticed on the other side of the lenght what is the magnification of the lens.
m= -23cm ------- 8.4cm m=-2.7
400
give a modern example of electric discharge, and bioluminescence
what is electric discharge: lightning and neon gas bioluminescence: fire fly
400
1.a ray parallel to the principal axis is reflected as if it had come thorigh the focus 2. a ray aimed at the centre of curvature is refected back upon itself. 3. a ray aimed at the focus is relfected parallel to the principal axis
what is how to locate a diverging image
500
retro-reflector ; an optical device in which the emergent ray is parallel to the incident mirage ; a virtual image that forms as a result of refraction and total internal reflection in Earth's atmosphere
What is retro-reflector what is mirage
500
complete the following equation: a diverging lens has a focal length of 29 cm . A virtual image of a marble is located 13cm in front of the lens where is the marble located?
what is 1= 0.043cm -1 -- do do=23cm the marble is located 23cm from the lens.
500
complete the following word equation: a small toy building black is placed 7.2cm infront of the lens and upright virtual image of magnification 3.2 is noticed. where is the image located?
what is di = (-3.2) (7.2) di = 23cm
500
the production of light from friction as a result of scratching crushing or rubbing certain crystals
what is the definition of triboluminescence
500
s - size of image a- attitude l- location t - type of of image
what is the Acronym S A L T ?
M
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