Question

Magnification of a mirror is '-1'. What type of mirror is it? What is the position of object and image? Give the nature of image.

Answer 1

Dear Student

The magnification -1 denotes that the image is inverted.
As real images are always inverted, so the image is also real.
Hence, It is a concave since concave mirrors produce real and inverted image.
Magnification -1 also denotes that the image is of the same size as the object.
We know that when an object is placed at centre of curvature of a concave mirror, it produces real, inverted and equal sized image. So the object's position is at the centre of curvature.
Image characteristics- 1. Real and inverted 2. At the centre of curvature 3. Same size of the object

Regards