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OCPP 102 1.2 - Laws Of Reflection And Refraction: Q&A
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OCPP 102 1.2 - Laws Of Reflection And Refraction: Q&A
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OCPP 102 1.2 - Laws Of Reflection And Refraction: Q&ALaw of reflection Right Ans - the angle of incidence is equal to the angle of
reflection
A straight line Right Ans - Unless interrupted, a single ray of light travels in
_______.
Predictable angle Right Ans - If the light strikes a reflective object, the ray
of light bounces back at a ______________.
Back on itself. Right Ans - If light strikes a surface at a perpendicular line
(the normal), it is reflected where?
The normal Right Ans - The angle of incidence and the angle of reflection
are both measured from _________.
Critical angle Right Ans - the angle of incidence that produces an angle of
refraction of 90 degrees
The normal Right Ans - A line perpendicular to the surface where the Ray
strikes the surface
Refracted Right Ans - Rays exiting the material at an angle less than the
critical angle will be ______.
Totally reflected internally Right Ans - Rays incident on the interface at an
angle greater than the critical angle will be ______.
i Right Ans - Angle of incidence is symbolized by
n Right Ans - Index of refractive medium is symbolized by
sin i = n2/n1 Right Ans - Sin i = _________ (formula)
refracted out of Right Ans - When the angle of incident light ray is less than
the critical angle, both are _________ the medium.
, 90 degrees Right Ans - When the angle of incident light rays is equal to the
critical angle, the angle of refraction is exactly _________ and the reflected ray
just grazes the surface.
totally internally reflected Right Ans - When the angle of incident light rays
is greater than the critical angle they are ______________ within the optical
medium.
Total internal reflection Right Ans - ____________ is the guiding principle that
helps transmit light through a fiber optic cable.
away from Right Ans - When light travels from a medium of greater index
into a medium of lesser index, it is refracted ___________ the normal.
reflected back Right Ans - For all the angles of incidence greater than the
critical angle, the refracted rays are ___________ into the medium of index (They
don't leave the medium)
total internal reflection Right Ans - Rainbows are a result of __________.
Dimmer (less refraction) Right Ans - As the angle of incidence increases
from 0 to greater angles the REFRACTED ray becomes __________.
Brighter (more reflection) Right Ans - As the angle of incidence increases
from 0 to greater angles the REFLECTED ray becomes _________.
90 degrees Right Ans - As the angle of incidence increases from 0 to greater
angles the angle of refraction approaches _________ until finally a refracted ray
can no longer be seen.
Destructive wavelengths Right Ans - Waves that are moving in the same
direction but the crests are out of phase.
destructive interference Right Ans - ___________ is the principle of an AR
coating.
Reflection Right Ans - _________ is the result of light waves that are
constructive by moving in the same direction and the crests are in the same
place at the same time. Waves are in phase.
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