# What is image distance and object distance in mirror?

## What is image distance and object distance in mirror?

For plane mirrors, the object distance (is equal to the image distance. That is the image is the same distance behind the mirror as the object is in front of the mirror. If you stand a distance of 2 meters from a plane mirror, you must look at a location 2 meters behind the mirror in order to view your image.

What is the image distance in convex mirror?

f, the focal length, is positive for a concave mirror, and negative for a convex mirror. 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.

Is object distance of concave mirror positive or negative?

focal length object distance
concave mirror positive positive
convex mirror negative positive
converging lens positive positive
diverging lens negative positive

### How do you find the distance between an object and an image in a concave mirror?

The distance between the object and its inverted image formed by a concave mirror is 25cm. If the magnification produced by the mirror is -2, use mirror formula to determine the object distance, image distance and focal length of the mirror.

Is object distance positive or negative?

object distance is always negative for all the lens & mirrors. image distance depends on object distance in case of concave mirror and convex lens. ‘v’ is always positive for convex mirror & concave lens.

Is power of convex lens positive?

The power of a lens is defined as the reciprocal of the focal length. Lens power is measured in dioptres (D). Converging (convex ) lenses have positive focal lengths, so they also have positive power values. Diverging (concave ) lenses have negative focal lengths, so they also have negative power values.