true or false?
Is rereflection the process in which light bounces of a surface and changes direction?
True
100
True or false?
Are the 3 primary subtractive colours yellow, magenta and cyan?
It is true
100
When drawing a ray diagram which of the following is not a characterist of the image?
a) Location
b) Type
c) Origin
d) Size
C) Origin
100
True or false?
Dispersion in the process of seperating colours by refraction?
It is true.
100
What is a concave lens?
A concave lens is a lens that bends inwords to the middle or the lens.
200
What is the process called in which light energy remains in the object that it hits and the light energy is convertded into heat?
This process is called absorption
200
When you add blue and green light what colour light do you get?
You will get the colour cyan
200
What is the angle between the incedent ray and the normal called?
The angle is called The angle of incedence
200
What is the law of refraction?
The law of refraction relates the angle of incidence and the angle of refraction and the refractive index
200
What does nearshighted mean?
Nearshighted means you can only see things that are close more clear then things that are futher away.
300
What is a ray?
A ray is an arrow that shows the direction in which light is traveling
300
If you add all 3 ptimary additive colours what colour do you see?
You would see the colour white
300
In a plane mirrow the angle of reflection is equal to what other angle?
In a plane mirror the angle of reflection is equal to the incidence angle
300
When will light not bend as it travels from one medium to another?
When it enters the medium at 90 degrees
300
Why do people have to wear lenses?
people have to wear lenses bacause the image at the retina is not placed right so the ather wear diverging or converging lens which help the image to the right spot of the retina
400
Explain the properties of a translucent object?
A translucent object allows light to pass through but scatters it in different directions
400
What 2 subractive colours have to be added to make blue?
You have to add cyan and magenta
400
What is the difference between convex and concave mirrors?
The difference is concave mirrors curve into the middle of the mirror when convex mirrors curve out towards the object
400
Why does light bend more as it enters glass from air than when it ebters water from air?
because the refractive index of glass is greater then the water.