To determine which diagram does NOT accurately illustrate the path light will take, we can analyze the descriptions you provided:
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Diagram of light reflecting off a mirror: Light reflection follows the law of reflection, where the angle of incidence equals the angle of reflection. If this diagram correctly follows those principles, it is accurate.
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Diagram of light refracting through a lens: Refraction occurs when light passes through a lens, bending toward the normal when entering a denser medium and away from the normal when exiting. If this diagram shows the light bending appropriately based on the type of lens, it is also accurate.
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Diagram of light refracting through a lens, but incorrectly showing some rays not bending: If this diagram inaccurately depicts some rays not bending as they pass through the lens, it would be incorrect because all light rays should bend when entering and exiting a lens.
Based on these assessments, the third diagram is the one that does NOT accurately illustrate the path light will take.