question_answer

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

Answer:

                At first sight, it appears that the image will be half of the object, but taking the laws of reflection to be true for all points of the mirror the image will be of Ac whole object. However, as the area of the reflecting surface has reduced, the intensity of the image will be dim.