On the physical interpretation of the central-symmetric gravitational-field singularities

It is shown that the existence of singularity in the centrally symmetric gravitational field, which is interpreted as a surface with unusual physical properties, follows from equations for the action and the energy of a test particle not using Einstein equations and their solutions. A black hole is treated as a physical model of the singularity in question. The results are compared with the usual interpretation of the singularity in Schwarzschild solutions to Einstein equations.