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Isaac Newton was significant to the study of:
mathematics.
physics.
optics.
All of the choices are correct.
Sunlight:
is a mixture of all visible light.
contains only red, yellow, and blue light waves.
does not contain ultraviolet waves.
None of the choices are correct.
Isaac Newton believed that light had properties of both particles and waves.
True
False
Light waves are made of:
ozone.
photons.
CFCs.
None of the choices are correct.
Which of the following types of electromagnetic waves causes the most damage to living things?
ultraviolet waves
radio waves
gamma rays
x-rays
An object that produces light because it has been heated is:
translucent.
incandescent.
fluorescent.
transparent.
Which of the following objects is the most transparent?
ceramic tile
bottled water
wood
ice
The standard unit of brightness is called the candela.
True
False
The direction of a reflected ray will always match its:
angle of incidence.
refracted ray.
diffused angle.
None of the choices are correct.
Plane mirrors always follow the law of reflection.
True
False
All light rays parallel to the optical axis of a concave mirror are:
refracted.
reflected through the focal point.
diffused.
incandescent.
Headlights on cars are made from convex mirrors.
True
False
Concave mirrors are used in reflecting telescopes.
True
False
A mirage is caused by the bending of light rays as they pass through air layers of different densities.
True
False
Light refracts because:
it is reflected at a focal point.
it changes speed.
its frequency does not match the object it is striking.
All of the choices are correct.
Lenses:
reflect light.
can only be concave.
do not have an optical axis.
None of the choices are correct.
Images are formed on the:
iris of the eye.
pupil of the eye.
retina of the eye.
cornea of the eye.
The vitreous humor is the part of the eye that light strikes first.
True
False
Lenses in the human eye do not change shape.
True
False
Ultraviolet radiation is not helpful to humans, it is only harmful.
True
False