Question

What will happen to the image formed by a mirror if half of it is covered with a black paper?

Answer 1

Hint:A mirror is a reflective surface that bounces off light, producing either a real image or a virtual image. When an object is placed in front of a mirror, the image of the same object is seen in the mirror.

Complete answer:
The object is the source of the incident rays and the image is formed by the reflected rays. Based on the interaction of light, the images or a virtual image. A real image occurs when the light rays actually intersect while virtual images occur due to the apparent divergence of light rays from a point.If half of the mirror is covered with black paper then the image shape will remain unaffected.Just intensity of image will reduce as now, number of reflecting rays will be less as no reflection takes place due to the covered portion.

In all the lenses and mirrors, all the points refract and reflect light to create an image. So the lower half of the mirror contributes in the same amount as the upper part. So when you cover half of the lens with black paper, you are not letting the refraction happen from that part, in turn reducing the intensity/brightness of the image.

Note:Shape of the mirror is irrelevant for an image to form. Also the shape of the mirror does not show in the image or manipulate the image in any way other than the brightness provided it has a part of two curved surfaces in line. The convex mirror and concave mirror form the full image if covered with black strip on half of its part but the intensity will be reduced.