New power law behavior (t(-3/2)) in the asymptotic relaxation of pseudo-first-order reversible diffusion-influenced reaction, A+B<->AB perturbed by photolysis is confirmed by a Brownian dynamics simulation in one dimension when the photolytic dissociation distance is equal to the thermal dissociation distance as predicted by Yang et al. [Phys. Rev. Lett. 79, 3783 (1997)]. For larger photolytic dissociation distances, however, our simulation curves follow the thermal relaxation curve at the beginning and deviate from the latter to show t(-3/2) power law behavior at longer times. The effect of photolytic perturbation on various nonequilibrium initial states is also examined by Brownian dynamics simulations.