Refraction Study guides, Class notes & Summaries
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COA: Refraction, Retinoscopy, and Refinement Questions + Answers Graded A+
- Exam (elaborations) • 3 pages • 2024
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Visual acuity of 6/12 is equivalent to 
A. 20/20. 
B. 20/30. 
C. 20/40. 
D. 20/50. - Answer-C. 20/40. 
The fact that most glasses have a downward tilt to minimize oblique astigmatism is called 
A. interpupillary distance 
B. pantoscopic tilt 
C. oblique astigmatism 
D. image displacement - Answer-B. pantoscopic tilt 
What is the principle reason for the routine preference of subjective over objective refraction? 
A. Automated retinoscopy systems make refraction efficient. 
B. The Jackson cross c...
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SSI Open Water Diver Final Exam: Sections 1 – 6 Questions and Answers
- Exam (elaborations) • 24 pages • 2023
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If you experience pain in the ear during descent: 
 
A - Place a finger in the ear canal and gently massage the ear until the pain ceases 
 
B - Stop the descent and ascend until the pain stops 
 
C - Continue the descent while gently exhaling into the mask 
 
D - Abort the dive - Answer- B - Stop the descent and ascend until the pain stops 
 
Earplugs: 
 
A - Protect against cold 
 
B - Protect the ears from squeeze 
 
C - Aid equalization of the middle ear 
 
D - Should never be worn while div...
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Student Exploration: Refraction Questions with Correct Answers
- Exam (elaborations) • 11 pages • 2023
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Vocabulary: angle of incidence, angle of refraction, frequency, index of refraction, medium, 
refraction, Snell’s law, total internal reflection, wave front, wavelength, wave speed 
Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 
Two runners ran side by side, each holding one end of a horizontal pole. 
1. What would most likely happen if one of the runners began jogging in knee-deep water? 
The jogger who was running in the water probably slow down. 
How would this affect the...
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Gizmos Student Exploration: Refraction, Questions with Correct Answers
- Exam (elaborations) • 12 pages • 2023
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Vocabulary: angle of incidence, angle of refraction, frequency, index of refraction, medium, 
refraction, Snell’s law, total internal reflection, wave front, wavelength, wave speed 
Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 
Two runners ran side by side, each holding one end of a horizontal pole. 
1. What would most likely happen if one of the runners began jogging in knee-deep water? 
__________________he would probably slow 
_____________________________________________...
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Sonography Practice Core 2023/24
- Exam (elaborations) • 7 pages • 2023
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Sonography Practice Core 2023/24 
 
D. 
A Sonographer with Sonography Canada Generalist and Vascular certification is performing an abdominal ultrasound in the ICU. The referring physician asks the Sonographer to investigate the heart for left ventricular hypertrophy. How should the Sonographer proceed? 
 
A. Angle the transducer towards the heart, and tell the physician the heart looks fine 
B. Explain to the referring physician that they are not credentialed in cardiac sonography but that they...
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AQA AS PHYSICS 7407/1 Paper 1 Mark scheme June 2022 Version: 1.0 Final
- Exam (elaborations) • 28 pages • 2023
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AQA AS PHYSICS 7407/1 Paper 1 Mark scheme June 2022 Version: 1.0 Final. 
MARK SCHEME – AS PHYSICS – 7407/1 – June 2022 
Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant 
questions, by a panel of subject teachers. This mark scheme includes any amendments made at the 
standardisation events which all associates participate in and is the scheme which was used by them in 
this examination. The standardisation process ensures that the mark schem...
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SSI Open Water Diver Final Exam 2022 Graded A+ (Actual test 100% verified)
- Exam (elaborations) • 7 pages • 2023
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Which of the statements concerning sound transmission underwater is incorrect? 
-A: Sound will travel farther underwater then in air 
-B: Divers find it difficult to locate the direction of a sound producing source 
-C: Divers find it easy to talk to each other directly through water 
-D: Sound travels four times faster underwater than in air -Answer- C 
The absolute pressure expressed in terms of atmospheres absolute at 33 feet in sea 
water is: 
-A: 2 ata 
-B:1 ata 
-C: 4 ata 
-D: 3 ata -Answe...
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Edelmen's SPI Exam Review Test Answered 100% Correctly!
- Exam (elaborations) • 31 pages • 2023
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Edelman SPI review questions & Answers 2023. 
______ is the distance covered by one cycle. 
a) pulse length 
b) wavelength 
c) cycle distance 
d) cycle duration 
 
______ is the time to complete one cycle 
a) pulse duration 
b) pulse period 
c) period 
d) duration period 
 
________ is a redirection of an ultrasound bean in many directions as a result of a rough boundary between two media: 
a) refraction 
b) Rayleigh Scattering 
c) scattering 
d) reflection 
 
_________ resolution is...
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Gizmo Refraction Student exporation Latest Update 2024 Version Already Passed
- Exam (elaborations) • 7 pages • 2024
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Gizmo Refraction Student exporation Latest Update 2024 Version Already Passed
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MMSC407 Exam 1 Questions with All Correct Answers
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MMSC407 Exam 1 Questions with All 
Correct Answers 
 
what type of light a Tungsden (Quartz-Vapor) exciter lamp shows us - Answer-visible 
light 
what type of light a Hydrogen/ Deuterium exciter lamp shows us - Answer-UV light 
what type of light a Xenon/MercuryVapor exciter lamp shows us - Answer-UV light 
visible light range - Answer-350-700 nm 
color absorbed at 350-430 nm - Answer-violet 
color absorbed at 430-475 nm - Answer-blue 
color absorbed at 475-495 nm - Answer-blue-green 
color abso...
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