A mirror with a flat surface - planar
Its base is a flat surface
A flat surface generally refers to a horizontal surface and is referred to as the plane.
A flat surface is no more that a plain horizontal surface with no depth. For example the surface of a table top is a flat surface, that is the surface only, not the depth of the top or the rest of the table
A flat surface that extends forever is a plane
The top of a liquid, known as the liquid surface, is generally flat and level when in a container at rest due to gravity acting uniformly on all parts of the liquid. However, external factors like surface tension or adhesion to the container may cause slight curvature or other shapes.
In general, liquids have a flat surface, because gravity tends to flatten them out. It is not perfectly flat, and often has waves or ripples if something has disturbed it. Even a perfectly undisturbed liquid is not perfectly flat, since gravity pulls in the direction of the center of the Earth, and there will be some curvature in the surface as a result - but since the center of the Earth is very distant, the curvature is slight. An additional influence on the shape of the surface of a liquid is surface tension. Water, in particular, has an attraction for many substances, and will rise up slightly where it meets the walls of its container.
You do not see a meniscus in Diagram C, as the liquid surface is flat and level with no curvature at the edges.
Well it depends on the density of the object and the density of the liquid that it is placed in. The object produces a buoyant force that lifts it to the surface of the liquid.
It does not have a flat surface.
Water evaporates quickly on a flat surface because a larger surface area is exposed to the surrounding air, allowing more water molecules to escape into the atmosphere. Additionally, on a flat surface, there is no pooling of water, so the water molecules are free to escape into the air more easily.
The flat surface that goes on and on in all directions has no boundaries. This flat surface is called infinite surface. Accordingly, the answer is that the flat surface that goes on and on in all directions is called an infinite surface.
A plane is a flat surface with no thickness
A flat, level surface is a plane.
It is a drawing of the earth on a flat surface
A mirror with a flat surface - planar
Its base is a flat surface