COT Exam UPDATED Exam Questions and CORRECT Answers
5 views 0 purchase
Course
COT
Institution
COT
COT Exam UPDATED Exam Questions
and CORRECT Answers
The range of wavelengths in the visible spectrum is? - CORRECT ANSWER- 400 - 800
nanometers
Immediately on either side of the visible spectrum are the invisible light segments of? -
CORRECT ANSWER- Infrared & ultraviolet
Which color has th...
COT Exam UPDATED Exam Questions
and CORRECT Answers
The range of wavelengths in the visible spectrum is? - CORRECT ANSWER✔✔- 400 - 800
nanometers
Immediately on either side of the visible spectrum are the invisible light segments of? -
CORRECT ANSWER✔✔- Infrared & ultraviolet
Which color has the longest wavelength? - CORRECT ANSWER✔✔- Red
Geometric optics includes? - CORRECT ANSWER✔✔- The effects of media on the path of
light
When light bounces back from an object, this is known as? - CORRECT ANSWER✔✔-
Reflection
In reflection, the light rays that hit the object or interface between media with different
indices of refraction are called? - CORRECT ANSWER✔✔- Incident rays
In optics, a medium (or media, plural) is: - CORRECT ANSWER✔✔- An object that reflects
light
When light passes through a transparent medium, it may travel straight through
(transmission) or its path may be altered. This altering or bending property of a medium is
known as? - CORRECT ANSWER✔✔- Refraction
The ray of light that enters a transparent medium is termed? - CORRECT ANSWER✔✔-
Incident ray
If light passes through a lens and the rays are spread apart on exiting, this is known as? -
CORRECT ANSWER✔✔- Divergence
,If light passes through a lens and the rays are spread toward each other on exiting, this is
known as? - CORRECT ANSWER✔✔- Convergence
A comparison of the speed of light in air to the speed of light through substance is? -
CORRECT ANSWER✔✔- IR (Snell's Law)
The denser the substance, the more slowly light passes through it and the what? - CORRECT
ANSWER✔✔- The higher the IR
The IR of crown glass is? - CORRECT ANSWER✔✔- 1.50
Light traveling through a prism will be bent toward the prisms what? - CORRECT
ANSWER✔✔- Base
The image of an object viewed through a prism Is what? - CORRECT ANSWER✔✔- Virtual
and shifted toward the apex
A 1.00 diopter prism bends light? - CORRECT ANSWER✔✔- 1 cm at a distance of 1m
from the prism
A 2.00 diopter prism displaces an object 1cm at a distance of what? - CORRECT
ANSWER✔✔- 05 m
The displacement of an object 5cm at a distance of 1m would require prism of what? -
CORRECT ANSWER✔✔- 5.0 diopters
At a distance of 2m, a 12 diopter prism would displace an object how far? - CORRECT
ANSWER✔✔- 24cm
A spherical lens refracts light? - CORRECT ANSWER✔✔- Equally in every direction
,The point at which a lens forms an image (whether real or virtual is the what? - CORRECT
ANSWER✔✔- focal point
True of false, regarding the optical center of a lens it always coincides with the geometric
center of the lens? - CORRECT ANSWER✔✔- False
The focal length of a lens is what? - CORRECT ANSWER✔✔- The distance between the
lens and the focal point
Because the focal point of a minus lens is virtual, the focal length of a minus lens is what? -
CORRECT ANSWER✔✔- Likewise virtual
What is the formula for finding the focal length? - CORRECT ANSWER✔✔- P = 1/F
What is the focal length of a 5 diopter lens? - CORRECT ANSWER✔✔- 0.2 m
A lens has a focal length of 33cm what is its dioptic power? - CORRECT ANSWER✔✔- 3
diopters
Name 3 characteristics of a cylindrical lens? - CORRECT ANSWER✔✔- 1. They are used
to correct astigmatism
2. They have power in one axis, but no power in the axis 90 degrees away
3. They focus light in a line
The direction of the line of light as focused by a plus power cylindrical lens is what? -
CORRECT ANSWER✔✔- Aligned with the axis
Light passing through a cylindrical lens is focused in 2 lines perpendicular to each other &
separated by an area known as what? - CORRECT ANSWER✔✔- Sturm's interval
, The light rays in the Sturm's interval are projected in the shape of a what? - CORRECT
ANSWER✔✔- cone
Within the Conoid of Sturm the area where the image would be most clearly focused is? -
CORRECT ANSWER✔✔- The circle of lease confusion
An optical cross is a means of what? - CORRECT ANSWER✔✔- Indicating the dioptic
power of a lens
The ocular media consists of? - CORRECT ANSWER✔✔- The tear film, cornea, humors &
lens
Which ocular structure has the highest refractive power? - CORRECT ANSWER✔✔-
Cornea
The primary goal of the eye's components is to what? - CORRECT ANSWER✔✔- Focus
incoming light onto the retina
Images pass through the optic nerve & thence to the what? - CORRECT ANSWER✔✔-
Chiasm, optic tract, lateral geniculate body, & optical cortex
All of the following are true regarding the accommodative reflex except: It is stimulated by a
blurred image, It is not a true reflex, It is required for viewing distant objects or it includes
convergence, miois & focusing - CORRECT ANSWER✔✔- It is required for viewing
distant objects
When the ciliary muscle relaxes what happens? - CORRECT ANSWER✔✔- The lens is
pulled thinner
The main reason one's accommodation ability decreases with age is due to what? -
CORRECT ANSWER✔✔- Hardening of the crystalline lens
With accommodation fully relaxed what is the pt's point of clearest vision? - CORRECT
ANSWER✔✔- the far point
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller MGRADES. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.