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level: Level 1 of Prism

Questions and Answers List

level questions: Level 1 of Prism

QuestionAnswer
It is used to study the reaction of the human eye to lightPrism
It is used to measure eye deviation or to exercise weak extra-ocular musclesPrism
It is incorporated in eyeglasses to prevent diplopia or straighten deviated yeePrism
Optical media with two plane and well-polished surfaces which are inclined towards each otherPrisms
It can deflect, deviate, and rotate beams of light as well as dispersing their wavelengthsPrisms
Type of prism that has two triangles as ends and three rectangles as facesTriangular prism
Type of prism that has four rectangles as faces and two rectangles as endsRectangular or cuboid prism
Prisms are used in optics to measure____phorias and tropias
It acts as beam splitters in photometry and interferometryPrisms
It is composed of adjacent prisms of increasing powerPrism bars
It is the plane surfaces of a prism which are inclined towards each otherRefracting Surfaces
What part of the prism refers to the planes ABCD and ABEF?Refracting surfaces
It is the surface facing the object and where incident rays hits the prism1st refracting surface
The surface where light rays leave the prism2nd refracting surface
What part of the prism is line AB?Edge or Apex or Refracting edge
It is the thinnest part of a prismEdge or Apex or Refracting edge
It is the line of intersections of the two refracting surfaces of a prismEdge or Apex or Refracting edge
What part of the prism is angle EAC and FBD?Apical angle or Refracting angle
The two refracting surfaces of prism formed and angle called____Apical angle or Refracting angle
It is located opposite the apex and considered as the thickest part of a prismBase
What part of the prism refers to planes AEC and BFD?Principal section
It is perpendicular to the base and it is the triangular portion of the prismPrincipal Section
The ray of light after pass through a prism is bent towards the _____Base
The image of an object seen through a prism is displaced towards the direction of the ____Apex
It is the primary usage of the prismto deviate light
Deviation constant of 1 prism diopter1cm
Deviation constant of 1 centrad1cm
Deviation constant of 1 prism degree0.9cm
Deviation constant of 1 prism degree deviation1.75cm
A prism with a power of One Prism Diopter can displace a ray of light by 1 cm for every meter distance that the light travelsPrism diopter
It is the most common unit of measurement of prism powerPrism diopter
It is the unit used in clinical practice of a prismPrism diopter
A prism with a power of One Centrad produces a displacement of light by 1 cm for every meter distance that the light travels on the circumference of a circleCentrad
It is the less frequently used unit to specify prism powerCentrad
Where is the prism diopter measured?On a tangent plane !m away
Where is the displacement of a centrad measured?On the arc of a circle having a 1m radius
A prism with a power of One Prism Degree can displace a ray of light by 0.9 cm for every meter distance that light travelsPrism degree
A prism with a power of One Prism Degree Deviation can displace a ray of light by 1.75 for every meter distance that the light travelsPrism degree deviation
The thin prisms or ophthalmic prisms can be recognized by its____Apical angle
It has an apical angle of 15 degrees or lessThins prisms
What is the displacement of the image if the base is oriented downward?Image Upward
What is the displacement of the image if the base is oriented upward?Image Downward
What is the displacement of the image if the base is towards the nose?Image Temporally
What is the displacement of the image if the base is towards the ears?Image Nasally
The emergent ray formed an angle with the original path of the incident ray and it is called ____Deviating angle
It is to determine the error of refraction and as the correction to relieve symptoms especially blurring of vision.Ophthalmic lenses
Darken in sunlight so that you don't need to swap your prescription spectacles for a pair of sunglassesPhotochromic lenses