An object is placed at the center of curvature of a concave mirror. If the mirror is now partially covered with an opaque material, what change will occur in the image?
The image will remain at the same position but will become less bright
When a concave mirror is partially covered, the remaining (uncovered) part still forms a complete image of the object, since every point on the mirror surface reflects rays that converge to form the whole image. Only the intensity (brightness) of the image reduces because fewer reflected rays reach the image point; the image position and size remain unchanged.
Hence, this is the correct answer.
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