A concave mark is called a "dent" or "depression." It refers to an indentation or hollow area in a surface.
No, a diamond is not concave. Diamonds have a faceted structure with flat surfaces called facets, rather than a concave shape.
A concave mirror is called a converging mirror because it converges or focuses light rays that are parallel to its principal axis at a single point called the focal point. This property makes concave mirrors useful for creating focused images.
A concave mirror.
concave mirror
A concave lens is called a negative lens because it causes light rays passing through it to diverge, or spread out. This is in contrast to a convex lens, which converges light rays and is called a positive lens. The negative or positive designation refers to the effect the lens has on the light rays.
A [concave] pentagon.
No, a diamond is not concave. Diamonds have a faceted structure with flat surfaces called facets, rather than a concave shape.
)( is a concave lens() is a convex lens
Concave
the hilum
it is called concave mirror
A concave mirror is called a converging mirror because it converges or focuses light rays that are parallel to its principal axis at a single point called the focal point. This property makes concave mirrors useful for creating focused images.
Lots of different things curve in. Something that curves inwards can also be called concave, a spoon is an example of something that is concave. A bowl is also concave and curves inward.
A concave mirror.
velaria
False
A concave polygon.