differenceof concave and convex reflection?

Question

a person looks at her reflection at the concave side of a shiny spoon. is it right side up or inverted? does it matter how far his face is from the spoon? what if he looks in the convex side?

Answer 1

A convex mirror, or diverging mirror, is a curved mirror in which the reflective surface bulges toward the light source. Such mirrors always form a virtual image, since the focus F and the centre of curvature 2F are both imaginary points "inside" the mirror, which cannot be reached.

A collimated (parallel) beam of light diverges (spreads out) after reflection from a convex mirror, since the normal to the surface differs with each spot on the mirror.




Concave mirrors

A concave mirror diagram showing the focus, focal Length, centre of curviture, principal axis, etc.A concave mirror, or converging mirror, has a reflecting surface that bulges inward (away from the incident light). Unlike convex mirrors, concave mirrors show different types of image depending on the distance between the object and the mirror itself.

These mirrors are called "converging" because they tend to collect light that falls on them, refocusing parallel incoming rays toward a focus. This is because the light is reflected at different angles, since the normal to the surface differs with each spot on the mirror.


The bowl of a spoon is an excellent example of both a concave and convex mirror surface.The same image is reflected at the same distance from both the inside and outside bowls of a spoon. The outside bowl, illustrated on the left-hand side, simulates a convex mirror reflecting an image of a woman standing beside a wooden sea wall. The image appears to spread out at the edges of the spoon bowl and seems to be reflected by light rays emitted from a location behind the spoon. Also, the image is smaller than that reflected from the inside bowl , and is upright because the reflected light rays do not cross a focal point. The image reflected from the inside bowl of the spoon, however, is inverted because the light waves intersect at the focal point before being imaged.

Answer 2

Convex is always right-side up. Concave is upside down unless you get inside the focal length (which, for a spoon, is pretty small).

Answer 3

Yes