character: Mr. Johnson
topic: Refraction and Lenses
grade: 11
subject: Physics
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character: Mr. Johnson
topic: Understanding Snell's Law
grade: 11
subject: Physics
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character: Mr. Johnson
topic: Applications of Lenses in Optical Devices
grade: 11
subject: Physics
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character: Mr. Johnson
topic: The Role of Refraction in Vision
grade: 11
subject: Physics
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