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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

by CK-12 //at grade

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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• Simulation

## Geometric Optics

by CK-12 //at grade

Demonstrates how an image changes when a lens is modified. (This is for convex lens only.)

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• PLIX

## Concave Lens: Lens

by CK-12 //at grade

Lens Interactive

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• Video

## Converging Lens

by CK-12 //at grade

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

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• Practice
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## Lens Practice

by CK-12 //at grade
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## Lens Quiz - PPB

by CK-12 //at grade

Quiz on lenses.

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• Critical Thinking

## Lens Discussion Questions

by CK-12 //at grade

A list of student-submitted discussion questions for Lens.

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• Study Guide

## Geometric Optics Study Guide

by CK-12 //at grade

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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