yes concave is like a cave
A concave is not a shape. It is a characteristic of one. It is like asking how many parallel lines a small has.
A concave mirror bulges away from the incident light. The image of an object depends on where exactly the object is placed - relative the to focal length of the mirror. See the attached link for more details.
No
A geometric star shape is concave. A star that is in the sky is convex.
yes concave is like a cave
no concave mirror is in shape of concave mirror
A concave is not a shape. It is a characteristic of one. It is like asking how many parallel lines a small has.
Upturned.
If it is symmetric then it looks like an arrowhead.
A concave mirror bulges away from the incident light. The image of an object depends on where exactly the object is placed - relative the to focal length of the mirror. See the attached link for more details.
No
A convex lens is thicker in the center than at the edges. A convex lens is like a concave mirror.A concave lens is thinner in the center than at the edges.
A geometric star shape is concave. A star that is in the sky is convex.
A concave circle
no
An arrow can have both concave and convex surfaces, depending in its design.