question_answer

(i) We have a spherical mirror. The image of an object placed in front of this mirror is virtual. If the position of the object is changed, the 2 image still remains virtual and erect. Is the spherical mirror concave or convex? (ii) We have a mirror. The image of an object placed in front of the mirror always forms on the other side of the mirror. If the position of the object is changed, the nature and the 3 magnification remains unchanged. Identify the type of the mirror. (iii) The image of an object placed in front of a spherical mirror is virtual. As the object distance is decreased infinity to focal length, l the size of the inverted image increases. Is the spherical mirror concave or convex?

Answer:

(i) convex mirror              (ii) plane mirror (iii) concave mirror