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The sun glasses have curved surfaces, bu...

The sun glasses have curved surfaces, but their power zero. Why?

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To understand why sunglasses have curved surfaces but their power is zero, we can break down the explanation step by step. ### Step 1: Understanding Lens Power The power \( P \) of a lens is defined as the ability of the lens to converge or diverge light rays. It is given by the formula: \[ P = \frac{1}{F} \] where \( F \) is the focal length of the lens. A lens with zero power does not converge or diverge light rays. ...
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