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# Lens

## Focusing or dispersing light emitted from an object can change how we see it in many different ways.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Lens

Students will learn how light behaves when passing through converging and diverging lenses. Students will also learn how to do ray tracing diagrams and calculate image distances and magnification using the lens' maker's equation.
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## Unit 12.4 Lens

Students will learn how light behaves when passing through converging and diverging lenses. Students will also learn how to do ray tracing diagrams and calculate image distances and magnification using the lens' maker's equation.
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• Interactive Simulations

## Magnifying Glass

Learn about the type, size, location, and orientation of the image that forms when a thin lens is used to view an object.
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• PLIX

## Diverging Rays

Lens Interactive
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• Video

## Converging Lens

Ray tracing and the lens equation are thoroughly explored for a converging lens.
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• Video

## Geometric Optics 7: Convex Lenses - Overview

by CK-12 //basic
Overview
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• Video

## Geometric Optics 8: Concave Lenses - Overview

by CK-12 //basic
Overview
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• Video

## Geometric Optics 9: Problems Involving Convex and Concave Lenses - Overview

by CK-12 //basic
Overview
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• Video

## Geometric Optics 7: Convex Lenses - Example 1

by CK-12 //basic
Identifying the features of convex lenses: principle axis, principle focus (F) , and the focal length (f)
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• Video

## Geometric Optics 7: Convex Lenses - Example 2

by CK-12 //basic
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• Video

## Geometric Optics 8: Concave Lenses - Example 1

by CK-12 //basic
Identifying the features of concave lenses: principle axis, principle focus (F) , and the focal length (f)
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• Video

## Geometric Optics 8: Concave Lenses - Example 2

by CK-12 //basic
Identifying the correct refracted image for a concave lens
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• Video

## Geometric Optics 9: Problems Involving Convex and Concave Lenses - Example 1

by CK-12 //basic
Determining the distance of a refracted image from a convex lens using the equation 1/s[o] + 1/s[i] = 1/f,
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• Video

## Geometric Optics 9: Problems Involving Convex and Concave Lenses - Example 2

by CK-12 //basic
Determining whether a refracted image is real or virtual, using the equation 1/s[o] + 1/s[i] = 1/f
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• Video

## Geometric Optics 9: Problems Involving Convex and Concave Lenses - Example 3

by CK-12 //basic
Determining the magnification and height of a refracted image using the equation m = -s[i]/s[o]
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• Video

## Geometric Optics 9: Problems Involving Convex and Concave Lenses - Example 4

by CK-12 //basic
Determining whether an image is upright or inverted, using the equation m = -s[i]/s[o]
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• 0

## Lens Quiz - PPB

Quiz on lenses.
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• Critical Thinking

## Lens Discussion Questions

A list of student-submitted discussion questions for Lens.
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• Real World Application

## Contact Lenses

Learn about lenses with this real world application.
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• Study Guide

## Geometric Optics Study Guide

This guide looks at geometric optics: reflection, refraction, Snell's law, total internal reflection, ray diagram, real and virtual images, mirrors, and lenses.
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• Flashcards

## Lens Flashcards

by CK-12 //basic