Question

The magnification produced by a concave mirror

• A. is always more than one
• B. is always less than one
• C. is always equal to one
• D. may be less than or greater than one.

Answer 1

The correct option is D

may be less than or greater than one.

Explanation

Magnification is defined as the ratio of the image height to the object height. Depending on the position of the object put, concave mirrors produce virtual or actual, erect or inverted, decreased or equal size images.

1. The magnification is one when the picture and the object are the same sizes.
2. The magnification will be larger than one if the image is bigger than object.
3. The magnification will be less than one if the image is smaller than object.
4. The negative sign implies a real image, while the positive sign represents a simulated image.

Hence, the correct answer is option D.