Show:
Snells Law Equations
Light Production
Magnification/Thin Lens Equations
Lens
Surprise?!?!
100
Find the angle of reflection, if the angle of incidence is 35'?
The angle of reflection is 35'.
100
Give an example of electrical discharge.
Lightning
100
What is the equation to solve for magnification?
M=hi/ho, also M=-di/do
100
True or False: A diverging lense always produces the same characteristics no matter where the object is.
True
100
1.31 is the index of refraction of what ?
What is ice.
200
Find the angle of refraction, when air travels through water (1.33) at an angle of incidence of 20'.
1*Sin*20=1.33*Sin*O 1*Sin*20/1.33=Sin*O Sin-1(1*Sin*20/1.33)=O O=15.22' Angle of refraction is 15.22'
200
Name all the colours in the electromagnetic spectrum.
Red, Orange, Yellow, Green, Blue, Indigo, Violet
200
The distance of an object is 15 cm away from the optical centre. The iamge is 10 cm away from O. How far away is the focus?
1/15 + 1/10= 1/f 2/30 + 3/30= 1/f 5/30=1/f 30/5=f/1 f=6 The focus is 6 cm away from the optical centre.
200
What are the characteristics of an objects image that is placed at F' in a converging lense?
There is no clear image.
200
Glass has a critical angle of 41' apx., for total internal reflection to occur does the angle of incidence have to be greater or less than 41'
What is greater
300
A light ray travels from water through "n", has an angle of incidence of 27' and angle of refraction of 24.35'. What is "n"?
1.33*Sin*27=n*Sin*24.35 1.33*Sin*27/24.35=n*Sin sin-1(1.33*Sin*27/24.35)=n n=1.52
300
What is the name of the object that gets really hot inside the light bulb when its turned on?
What is the filament.
300
The height of the object is 6cm, the height of the image is 24cm. What is the magnification of the mirror?
M=hi/ho M=24/6 M=4 The magnification is 4.
300
What 3 places can an objects image be placed at in a converging lense in order to produce a real image?
beyond 2F', at 2F', and between 2F' and F'
300
At what velocity will light travel through a diamond?
What is V=N/C V=3.00*10''''''''/2.42 V=1.24*10''''''''
400
Light travels from ice (1.31)into olive oil (1.48), at an angle of refraction of 26'. What is the angle of incidence?
1.31*Sin*O=1.48*Sin*26' Sin*O=1.48*Sin*26/1.31 O=Sin-1(1.48*Sin*26/1.31 O=30.84' Angle of incidence is 30.84'
400
What does one have to do to produce light using triboluminescence?
When crystals are rubbed, scratched or crushed together, they produce light.
400
The magnification of a mirror is 6. The height of the object is 3cm. How tall is the image?
M=hi/ho hi=M*ho hi=6*3 hi=18 The height of the image is 18 cm
400
Find the image using all 3 locating rules and use SALT to describe the image.
S smaller A inverted L between F and 2F T real
400
Your using a converging lense, the only place you see a virtual image is...
When the object is placed before F'
500
What is the critical angle for light rays passing from glass to air?
1.52*Sin*O=1*Sin*90 Sin*O=1*Sin*90/1.52 0=Sin-1(1*Sin*90/1.52) O= 41.14 The critical angle of glass is 41.14'
500
Name all 9 types of light.
Laser, LED, incandescence, chemiluminescence, bioluminscence, electric discharge, triboluminescence, phosphorescence, fluorescence
500
An object is placed at 30cm away from the optical centre. Where will the image appear?
1/do+1/di=1/f 1/30+1/di=1/12 2/60+1/di=5/60 1/di=5/60-2/60 1/di=3/60 di=20cm The image will appear at 20cm.
500
Label the 5 points on the diagram.
1. principal axis 2. optical centre 3. refracted ray 4. secondary focus 5. lens
500
What does SALT stand for?
Size, Attitude, Location, Type of image