Question

where should an object be placed in front of a spherical mirror so that the size of the image is equal to that of the object identify the type ofwhere should an object be placed in front of a spherical mirror so that the size of the image is equal to that of the object identify the type of mirror ​

Answer 1

Answer:

it should be placed at 2f1 and the mirror is a convex lens

Answer 2

Answer:

Explanation:

the size of the image and object are related by a term called ‘magnification’ produced. its the ratio of two sizes

if you wish to have those two sizes same

means magnification = 1

however magnification can also be related to the ratio of image distance from optical center to the distance of object from the center.

i.e. m = v/u where v=image distance and u = object distance

so if m=1 , then v=u and this condition happens when the object is at the centre of the curvature i.e at R = 2. focal length

for concave spherical mirror.