 and the nature of the image. So, we know that the mirror formula is 1 upon focal length is equals to 1 upon image distance plus 1 upon object distance. When this is sent that way we get 1 upon V is equal to negative 1 by 18 plus 1 by 27. We know that the L, the C, the M is the 54, clear 52, 54, okay. Now 3 and 2 minus 3 plus 2. So, negative 1 by 54. On the same side, the screen should be placed at a distance of 54 centimetre, clear on the same side of the object, clear sorted now.