What is the formula in finding the height of the object mirror?

The height of an object reflected in a mirror can be determined using the formula ( h' = h \times \frac{d'}{d} ), where ( h' ) is the height of the image, ( h ) is the height of the object, ( d' ) is the distance from the mirror to the image, and ( d ) is the distance from the mirror to the object. In a plane mirror, the image height is equal to the object height, so ( h' = h ). For concave or convex mirrors, the object and image distances can be derived from the mirror formula ( \frac{1}{f} = \frac{1}{d} + \frac{1}{d'} ) to find the respective heights.