Question

15. A spherical mirror is placed in contact with the wall of a room of length 8 m. An
illuminated object is placed 4 m away in front of the mirror. What should be the type and
focal length of the mirror, so that the image of the given object may be form on the
opposite wall? What is the nature of the image in this case?

Answer 1

Answer:

The spherical mirror can not be

convex because it does not form

real image (that can be formed on a screen).

So, the mirror has to be

conceal. In case of concave mirror,

the real image is formed if the

object distance greater than focal

length. For enlarged real image

the object should be placed

between the center and focus of

the mirror. The image formed

will be real, enlarged and inverted

so, the magnification will be -2.