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ABO (Practice Test) A+ Verified Solutions
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- AQA Biology Paper 2 Marking Scheme
ABO (Practice Test) A+ Verified Solutions
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ABO (Practice Test) A+ Verified SolutionsTo what does a ptosis crutch give support? - ANS--Upper Lid.
How is a lens' focal LENGTH altered? - ANS--Changing the curvature of one surface.
Which instrument measures vertex distance? - ANS--Distometer.
What controls the amount of light that enters the eye? - ANS--Iris.
Which word is used to describe light's changing direction as it passes from one medium
to another? - ANS--Refraction.
Frame materials are available in which two forms? - ANS--Metal and plastic.
Meniscus, equiconcave and flat concave are types of what? - ANS--Minus lenses.
What term is used to describe the eye's TENDENCY to turn from it's normal position? -
ANS--Phoria
What is the refractive condition in which light focuses directly on the retina? -
ANS--Emmetropia.
What kind of lens has one convex and one concave surface? - ANS--Meniscus.
What material has the most favorable OPTICAL properties? - ANS--Crown Glass.
What is the best lens treatment to reduce water and road surface glare? -
ANS--Polarized.
Which private agency is responsible for establishing commercial and industry
standards? - ANS--ANSI (Z80.1)
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