Optics - multiple choice
Glow sticks are an example of light created by
Chemiluminescence
In a mirror for an image to be real, reflected rays must converge
In front of the mirror
An example of electric discharge
Lightning
In a converging lens, where is the primary focus found
On the opposite side side of the lens from the object
What has a longer wavelength than infrared light
Radio waves
The bending of light as it travels from one medium to another is called
Refraction
What happens when incident light hits at an angle less than the critical angle
Refraction
What is not a form of electromagnetic radiation
Sound
Visible light travels in
Straight lines
In order for total internal reflection to happen the following must be true
The 1st medium is more dense than the 2nd
When the angle of refraction equals 90 degrees the corresponding angle of incidence is called
The critical angle
An image in a plane mirror appears to be
The same distance behind the mirror
What's the index of refraction for a medium
The speed of light in a vacuum divided by the speed of light in the medium
What is an example of a luminous object
The sun
What happens when incident light strikes at an angle greater than the critical angle
Total internal reflection
Objects that allow light to pass through are described as
Transparent
In a lens where is the image located
Where refracted rays converge
In a light ray diagram, a normal is
90 degrees to the mirror surface
What type of mirror can produce a real image
A concave mirror