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NAO Volume 2 Questions With Answers Graded A+ Assured Success
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If a light beam passes through a green sunglasses lens, why will the exciting light be green? - ️️The green rays are refracted through the lens and all other color rays are absorbed by the pigments in the lens material hen a ray of light travels from water into air ( which is rarer than wate...

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  • October 24, 2024
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  • 2024/2025
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NAO Volume 2
If a light beam passes through a green sunglasses lens, why will the exciting light be
green? - ✔️✔️The green rays are refracted through the lens and all other color rays are
absorbed by the pigments in the lens material


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? - ✔️✔️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

Deviation (Angle of) - ✔️✔️the angle a ray of light is changed from its original path

Diffuse Relection - ✔️✔️a reflection from a rough surface- the reflection does not
produce a clear image

Incidence (Angle of) - ✔️✔️the angle which a ray of light makes the surface of a
refracting medium

Reflection - ✔️✔️the return of light waves from a surface the production of an image

Refraction - ✔️✔️the bending of light when going from one medium into another

Refraction (Angle of) - ✔️✔️the angle created when a ray of light passes from one
medium into another

Specular Reflection - ✔️✔️the forming of a clear image when light strikes a surface

Why is a red pencil red? - ✔️✔️It reflects red rays back toward the eye and absorbs all
the other rays of visible light

Why is the blacktop black? - ✔️✔️It does not reflect any rays back toward your eye;
rather it absorbs them all

Absorption - ✔️✔️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


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? - ✔️✔️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? - ✔️✔️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? - ✔️✔️If the ray is
perpendicular to the surface it speeds up but does not change direction; it is not
deviated or displaced

What does critical angle mean? - ✔️✔️a light ray leaving a denser material is rarer
material that is at an angle of normal that results in it traveling parallel to the surface of
the material. If the angle of incidence is greater than the critical angle the ray will reflect
inside the material and will not exit into the rarer material

What are the three things that can happen to a ray of light when it passes through a
lens? - ✔️✔️absorbed, reflected, refracted

What is the difference between a high index lens and a aspheric lens - ✔️✔️high index
refers to the material of the lens; aspheric refers to the surface design of the lens

What is transposition? - ✔️✔️is the changing of a precription from plus cylinder to
minus cylinder or the other way around

What type of image is formed by a minus lens? - ✔️✔️virtual

A plus lens does what to a light ray that passes through it? - ✔️✔️makes them
converge

What does the term critical angle of a material mean? - ✔️✔️ray of light is striking the
surface at an angle so that the ray is refracted along the surface of the lens

A minus lens with the optical center moved up creates? - ✔️✔️base down prism

A base-up prism - ✔️✔️bends light toward the base, bends light rays away from the
apex, projects an image of the objects downward

the wavelengths of visible light range approximately from? - ✔️✔️400-720 nanmometer

the wavelengths of light that are the most pleasing to the eye are? - ✔️✔️blue-green

The breakdown of light into its component colors is called? - ✔️✔️dispersion

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