The image of a bright object is bought on a screen with the help of a concave mirror. If the upper half of the mirror is covered then:

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The size of the image will become half

The image will be disappeared

The brightness of the image will be reduced

The image will change its position

answer is C.

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Detailed Solution

If the upper half of the mirror is covered, then the brightness of the image will be reduced.
The image of a bright object is bought on a screen with the help of a concave mirror. If the upper half of the concave mirror is covered, then the light rays from the object focusing on the mirror are reduced. This results in reducing the brightness of the image. However, there would be no change in the object's image size because its distance is not changed.

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