NAO VOLUME 2 | 92 COMPLETE QUESTIONS
AND ANSWERS WITH VERIFIED SOLUTIONS!
Absorption - ANSWER in terms of light and lens- when a ray of light enters a
lens some of the light will not completely travel through the lens
Deviation (Angle of) - ANSWER the angle a ray of light is changed from its
original path
Diffuse Relection - ANSWER a reflection from a rough surface- the reflection
does not produce a clear image
Incidence (Angle of) - ANSWER the angle which a ray of light makes the surface
of a refracting medium
Reflection - ANSWER the return of light waves from a surface the production of
an image
Refraction - ANSWER the bending of light when going from one medium into
another
Refraction (Angle of) - ANSWER the angle created when a ray of light passes
from one medium into another
Specular Reflection - ANSWER the forming of a clear image when light strikes a
surface
, Why is a red pencil red? - ANSWER It reflects red rays back toward the eye and
absorbs all the other rays of visible light
Why is the blacktop black? - ANSWER It does not reflect any rays back toward
your eye; rather it absorbs them all
If a light beam passes through a green sunglasses lens, why will the exciting light
be green? - ANSWER The green rays are refracted through the lens and all
other color rays are absorbed by the pigments in the lens material
When a ray of light travels from air into water (which is denser than air) what
happens to the ray of light if the ray is perpendicular to the surface? - ANSWER
If the ray is perpendicular to the surface it slows down but does not change
direction; it is not deviated or displaced
When a ray of light travels from air into water (which is denser than air) what
happens to the ray of light if the ray is not perpendicular to the surface? -
ANSWER If the ray is not perpendicular to the surface it slows down and
changes direction toward the normal; it is deviated from its original path
When a ray of light travels from water into air ( which is rarer than water) what
happens to the ray of light if the ray is perpendicular to the surface? - ANSWER
If the ray is perpendicular to the surface it speeds up but does not change
direction; it is not deviated or displaced
hen a ray of light travels from water into air ( which is rarer than water) what
happens to the ray of light if the ray of light is not perpendicular to the surface? -
ANSWER If the ray is not perpendicular to the surface it speeds up and changes
direction away from the normal; it is deviated from its original path
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