Table of Contents
Is the object distance of a convex lens positive or negative?
| focal length | object distance | |
|---|---|---|
| concave mirror | positive | positive |
| convex mirror | negative | positive |
| converging lens | positive | positive |
| diverging lens | negative | positive |
Is object distance is negative in concave lens?
See according to the New Cartesian Sign convention U i.e., the object distance is always in the left hand side of the lens or mirror i.e., to -X side. It is taken as negative in Concave lens since image is formed in -X side of the Cartesian. In Concave mirror V is taken as positive and negative for convex mirror.
Is image distance positive or negative?
| focal length | image distance | |
|---|---|---|
| converging lens | positive | positive, if on the opposite side as object (real) negative, if on the same side as object (virtual) |
| diverging lens | negative | negative,as all images are virtual and on the same side as object (virtual) |
Is object distance negative in convex mirror?
(Careful: image distances for convex mirrors are always negative.)
Can the object distance be negative?
Explanation: Object distance is always negative as per the sign conventions. If you want to ask for image distance then yes image distance can be negative for convex lens. Such an image is produced when the object is kept at a distance less than the focal length of the lens.
What happens when image distance is negative?
What does a positive or negative image height or image distance mean? 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.
What is negative in convex lens?
Focal length of Convex Lens is positive. Focal length of Concave Lens is negative. Since object is always in front of the lens, object distance is always negative. If a real image is formed, image is formed on right side, so image distance is positive.
What does a negative object distance mean?
Why is the image distance is negative?
In the case of the image distance, a negative value always means the image is located on the object’s side of the lens. Note also that the image height is a positive value, meaning an upright image. Any image that is upright and located on the object’s side of the lens is considered to be a virtual image.
What if image distance is negative?
What does a negative image distance mean for a lens?
If the lens equation yields a negative image distance, then the image is a virtual image on the same side of the lens as the object. If it yields a negative focal length, then the lens is a diverging lens rather than the converging lens in the illustration.