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Image Formation by Spherical Mirrors

Suppose that ...

Question

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

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Solution

If the lower half was covered ,the size of the image will not vary.But the intensity of image will become less.

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is kept in front of a concave mirror as shown in the figure.
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