What does it mean when the object distance is negative?

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.

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.

Can the object distance be negative for a mirror?

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 U positive or negative in concave mirror?

Since as object is always placed to the left side of a mirror, therefore, the object distance (u) is always negative. The images formed by a concave mirror can be either behind the mirror (virtual) or in front of the mirror (real).

Is object distance positive or negative?

Object distances are always positive. Real images are always inverted and virtual images are upright.

What are virtual objects is U positive or negative?

I think the easiest way to do it is the following: u is always positive. v is positive for a real image, which is of course in front of a mirror, or behind a lens. f is positive for a converging lens or mirror.

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

Is U positive in concave lens?

So f is positive for a convex lens and negative for a concave lens. The reason is the sign altering of v. 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. That is why U is always taken as negative.

What is the value of you in a concave mirror?

Only U’s value is negative, while V and F are positive. Even in the last case of a concave mirror, when object is placed between the focal point and pole, it produces a virtual, erect and enlarged image behind the mirror.

What is the sign of distance from a convex mirror always negative?

As per the new Cartesian system, the sign of the distance of the object from a convex mirror is always negative. This teen turned $250 into her own private jet! This was a no-brainer!

Why do the rays of a concave mirror converge after reflection?

The convergence of the rays after reflection is because the normal to the reflecting surface differs at each point on the mirror. There is a formation of different images in a concave mirror. It mainly depends on the distance between the object and the mirror. Concave mirrors form both real and virtual images.

Can the sign of object distance be negative?

In this regard the object distance may be positive (for virtual object) or negative (for real objects). What is the sign of object distance (-u) from a convex mirror? As per the new Cartesian system, the sign of the distance of the object from a convex mirror is always negative.