Question

A spherical mirror produces an image of magnification-1 on a screen placed at a distance of 50cm from the mirror.
1.Write the type of mirror.
2.Find the distance from the image from the object

Answer 1

      The given spherical mirror produces an image of magnification -1.  Since it is minus it means that the image is inverted. SO it is a real image. Hence it is a concave mirror.

    given u = -50 cm
    - v/u = m = -1
     v = -50 cm
    Object distance from the mirror = 50 cm.

Answer 2

object distance from the mirror is 50 cm