character: Dr. Smith
topic: Applications of Lenses in Optical Devices
grade: 10
subject: Physics
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character: Mr. Johnson
topic: Refraction and Its Applications
grade: 10
subject: Physics
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character: Ms. Lee
topic: How Lenses Affect Image Formation
grade: 10
subject: Physics
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character: Mr. Patel
topic: Types of Optical Devices Using Lenses
grade: 10
subject: Physics
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