Light Flashcards
(28 cards)
True or False: the colors of the EM spectrum are ROY GBIG
False.
The frequency continuum of electromagnetic waves…
The electromagnetic spectrum
True of False: visible light is between infrared and x-Ray.
False.
True of False: the unit of light intensity is the light year.
False
True or false: microwaves are on the EM spectrum.
True
A light sources power, the rate at which it radiates energy is ___?
Intensity.
A line with a arrow head showing direction is ____?
Ray.
The type of reflection of smooth, flat surfaces is called ___?
Specular reflection.
The type of reflection off rough and uneven surfaces?
Diffuse reflection.
The SI unit of light intensity.
Candela.
The light ray approaching the reflected surfaces is the ___?
Incident ray.
The outgoing ray after it has reflected off the surface is ___?
Reflected ray.
The light produced by materials til they glow.
Incandescent.
The angle of the incident ray is ___?
Angle of incidence.
Light occurring when a substance radiates visible light as it absorbs a higher rate of energy is ___?
Fluorescence.
An image seen where no real object exists.
Virtual image.
The angle of the reflected ray?
Angle of reflection.
True or False: a beam is lots of photons moving in the same direction.
True.
True or False: when rays of light converge they produce a virtual image.
False.
True or False: a virtual image is the same as a real image.
False.
True or False: A point in front of a mirror where light rays converge is focal length.
False.
True of False: a ray is line with an arrowhead showing direction.
True.
It’s slightly dished in in the reflected side?
Concave.
A mirrors surface bulged outward.
Convex.
