To determine the type of mirror based on the magnification provided, we need to understand how magnification works for different types of mirrors.
1. Magnification and Plane Mirrors: - A plane mirror always creates an image that is the same size as the object. - This means the magnification (M) for a plane mirror is always +1. - Hence, if the magnification is +1, it implies that the mirror is producing an image equal in size to the object.
2. Magnification and Concave Mirrors: - A concave mirror can produce different magnifications depending on the position of the object relative to the focal point of the mirror. - The magnification can be greater than 1, less than 1, or even negative, but it generally is not exactly +1 for most object positions.
3. Magnification and Convex Mirrors: - Convex mirrors always produce images that are smaller than the actual object. - This results in a magnification (M) that is less than +1, and it is never +1.
Given that we know the magnification is exactly +1, this aligns with the characteristics of a plane mirror and not with either convex or concave mirrors.
Therefore, the type of mirror is: (a) Plane mirror