Optical knowledge questions || Questions and 100% Accurate Answers.
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Optical Knowledge
The theory which explains light as a stream of invisible bundles of energy is the ___________ theory.
a. Refractive
b. Electromagnetic
c. Corpuscular
d. Prismatic correct answers c
The invisible bundles of energy are known as ___________.
a. Waves
b. Rays
c. Pulsations
d. Photons c...
the theory which explains light as a stream of inv
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Optical knowledge questions || Questions and 100%
Accurate Answers.
The theory which explains light as a stream of invisible bundles of energy is the ___________
theory.
a. Refractive
b. Electromagnetic
c. Corpuscular
d. Prismatic correct answers c
The invisible bundles of energy are known as ___________.
a. Waves
b. Rays
c. Pulsations
d. Photons correct answers d
The theory which explains light as moving in a series of wave pulsations is the __________
theory.
a. Refractive
b. Electromagnetic
c. Corpuscular
d. Prismatic correct answers b
The speed of light in air is ______________.
a. 186000 in/s
b. 186000 ft/s
c. 186000 yd/s
d. 186000 mi/s correct answers d
A point of light pulsating in a straight line is known as a _________.
a. Vector
b. Ray
c. Shadow
d. Prism correct answers b
Visible (white) light is composed of wavelengths containing _________.
a. All colors
b. Blue and green only
c. Red and violet only
d. Blue and red only correct answers a
,A prism will always bend light towards its ________.
a. Apex
b. Optical center
c. Base
d. Photon correct answers c
A one diopter prism will deviate a ray of light one centimeter in a distance of ___________.
a. One foot
b. Two feet
c. One meter
d. Two meters correct answers c
The image being viewed through a prism will always be displaced towards its ___________.
a. Apex
b. Optical center
c. Base
d. Photon correct answers a
The bending of light as it passes from a medium of lesser density to a medium of greater density
is known as __________.
a. Dispersion
b. Viscosity
c. Displacing
d. Refraction correct answers d
The speed of light in air divided by the speed of light in a given material equals the
__________________.
a. Prismatic effect
b. Refractive index
c. Dioptric power
d. Wavelength correct answers b
All other factors being equal, which of the following materials will yield the thinnest lens?
a. CR-39
b. Crown glass
c. Polycarbonate
d. Air correct answers c
The single point through which light may pass without being deviated is the _____________.
, a. Apex
b. Radius of curvature
c. Optical center
d. Base correct answers c
Plus lenses can be characterized by the following two attributes.
a. Diverging/with motion
b. Converging/against motion
c. Converging/with motion
d. Diverging/against motion correct answers b
Minus lenses can be characterized by the following two attributes.
a. Diverging/with motion
b. Converging/against motion
c. Converging/with motion
d. Diverging/against motion correct answers a
Simple myopia (nearsightedness) can be corrected with ___________.
a. Prisms
b. Plus spheres
c. Minus spheres
d. Cylinder lenses correct answers c
Simple hyperopia (farsightedness) can be corrected with ____________.
a. Prisms
b. Plus spheres
c. Minus spheres
d. Cylinder lenses correct answers b
An eye which requires a different correction in different meridians can be corrected with
__________.
a. Prisms
b. Plus spheres
c. Minus spheres
d. Cylinder lenses correct answers d
Study the four astigmatic conditions and their corrections. Which of the four is wrong?
a. Simple myopic astigmatism/Correct with plano on minus cylinder
b. Compound myopic astigmatism/Correct with minus on minus
c. Compound hyperopic astigmatism/Correct with plus on minus
d. Mixed astigmatism/Correct with plus on minus correct answers c
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