Motion of light in a centrally symmetric field in the relativistic theory of gravitation

A study is made of the deflection of a light ray and the delay of a radio signal (Shapiro effect) in a centrally symmetric metric that generalizes in the relativistic theory of gravitation Fock's harmonic interval and contains a second constant (proportional to the radius of the body). It is shown that this constant (which depends on the structure of the central body) occurs explicitly in the expressions obtained for both effects and, therefore, can in principle be determined from the motion of light.