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The image of a candle is formed on a screen by a convex lens. It half of lens is blackened then what will be the size of image ?

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The image of a candle is formed on a screen by a convex lens. It half of lens is blackened then what will be the size of image ?

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The ray coming from any point of candle meets at the same point after refraction through half portion, where it meets in case of total lens. So, full image is formed but intensity of image decreases.

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