  Calculations of form factor for the radiative decays $V\rightarrow
P\gamma^{*}$ process are performed in the framework of an instant form of
relativistic quantum mechanics. The electromagnetic current operator for this
decay is constructed. The transition form factor is obtained in the so called
relativistic modified impulse approximation (MIA). The current operator
satisfies the conditions of Lorentz-covariance and current conservation in MIA.
The results of the calculations are compared with the analogous results in the
light-front dynamics and in the model of vector meson dominance
