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NAO Exam Review: Questions With Complete Solutions
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NAO Exam Review: Questions With Complete Solutions
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NAO Exam Review: Questions With Complete SolutionsFormula for Metric System Right Ans - 1m = 10dm = 100cm = 1000mm
What is one-billionth of a meter? Right Ans - nanometer
Visible light ranges from _____ nanometers. Right Ans - 400 - 700
nanometers
Which color has the longest wavelength, travels the fastest, bends the least,
and has the least energy? Right Ans - Red
Which color has the shortest wavelength, travels the slowest, bends the most,
and has the most energy? Right Ans - Violet
UVA rays ranges from _______ nanometers and are absorbed by the _________
______. Right Ans - (315-400), crystalline lens
UVB rays ranges from ______ nanometers and are absorbed by the ________.
Right Ans - (275-330), cornea
UVC rays are absorbed by the _____________ and generally poses no ocular
threats. Right Ans - Atmosphere
Infrared wavelengths are _____ than the color red's wavelengths. Right Ans -
Longer
How can you calculate the speed of light in a new medium? Right Ans - n =
c/v
Define n = c/v Right Ans - Index of refraction = speed of light in vacuum /
speed of light in new medium
When a ray of light meets a different substance what 4 things occur? Right
Ans - a. Some light will be reflected at the boundary.
b. Some are scattered.
c. Some are absorbed.
d. The rest will travel through new substance.
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