The elastic scattering angular distributions of B-11 projectile on light, medium, and heavy target nuclei including Li-7, Be-9, C-12, O-16, Mg-24,Mg-25,Mg-26, Al-27, Si-28, Ca-40, Ni-58, Co-59, Ni-60, Au-197, Pb-208, and Bi-209 have been analyzed at various incident energies. The theoretical results have been obtained by using two different nuclear potentials within the framework of the optical model (OM). Firstly, the double folding potential for real part and the Wood-Saxon (WS) potential for imaginary part have been applied. Secondly, the calculations with double folding potential for both real and imaginary part have been performed and compared with the experimental data. It has been seen that the results are in very good agreement with the experimental data. Also, the volume integrals and cross-sections for each reaction have been obtained. Finally, a new and simple formula for the imaginary potential depth has been derived to clarify the nuclear interactions of B-11 nucleus at low energy reactions.