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Suppose that the lower half of a concave...

Suppose that the lower half of a concave mirror's reflecting surface is covered with an opaque non-reflecting material. What effect will this have on the image of an object placed in front of the mirror ?

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As laws of reflection are true for all points of the mirror, the image will be of the whole object (and not of half object as expected erroneously). However, as area of the reflecting surface has been reduced, the intensity of the image will reduce.
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