Question

The linear magnification produced by a spherical mirror is +3. Analyse this value and state the type of mirror

Answer 1

we know,
linear magnification = height of image / height of object .

+3 = height of image / height of object

here we can see that height of image is 3 times of height of object . this is possible in concave mirror , because in concave mirror , magnification is greater then 1 . not in convex mirror .
also we can say about image that image is real ,