Question

what is image distance?when it can be positive and negative​

Answer 1

Answer:

When the image distance is positive, the image is on the same side of the mirror as the object, and it is real and inverted. When the image distance is negative, the image is behind the mirror, so the image is virtual and upright. A negative m means that the image is inverted. Positive means an upright image.

Answer 2

if it is positive the image on the same side of mirror as a object.....

♥Hope it helps♥