Question

What is the magnification of concave mirror?

Answer 1

Concave mirror:

1. The reflecting surface of a concave mirror is bent inward and away from the light source.
2. Concave mirrors focus light inward to a single focal point.
3. In contrast to convex mirrors, the image generated by a concave mirror changes based on the distance between the item and the mirror.

Magnification of Convex mirror:

1. Magnification is the process of making an item look larger than it is, or making a distant object appear closer than it is.
2. The magnification formula is:
   $\mathrm{M}=\frac{{\mathrm{H}}_{\mathrm{i}}}{{\mathrm{H}}_{\mathrm{o}}}=-\frac{{\mathrm{D}}_{\mathrm{i}}}{{\mathrm{D}}_{\mathrm{o}}}$
   Where, $\mathrm{M}$ is the magnification
   ${\mathrm{H}}_{\mathrm{i}}$ is the height of the image
   ${\mathrm{H}}_{\mathrm{o}}$ is the height of the object
   ${\mathrm{D}}_{\mathrm{i}}$is the distance from the lens to the in-focus projected image
   ${\mathrm{D}}_{\mathrm{o}}$ is the distance from the object to the lens
3. The negative (-) sign represents the fact that the image is inverted

When the object's distance is less than the focal length in a concave mirror, the magnification is more than one.

When the object's distance exceeds the focal length, the magnification is less than one.