  The response of pseudoscalar and vector mesons to strong magnetic fields is
studied within a simple constituent quark model using analogy with bound states
of Positronium. Magnetic moments of charged vector mesons K*, D*, B* are
predicted and it is found that Eta mesons have magnetic polarizability. In
extremely strong magnetic fields, behaviour of J/Psi mesons is discussed. We
speculate on the existence of an induced magnetic moment of Eta meson.
