  We generate the non-separable state of polarization and orbital angular
momentum (OAM) using a laser beam. The generated state undergoes a cyclic
polarization evolution which introduces a Pancharatnam geometric phase to the
polarization state and in turn a relative phase in the non-separable state. We
experimentally study the violation of Bell - CHSH inequality for different
Pancharatnam phases introduced by various cyclic polarization evolutions with
linear and circular states as measurement bases. While measuring in linear
bases, the Bell-CHSH parameter oscillates with Pancharatnam phase. One can
overcome this dependence by introducing a relative phase in one of the
projecting state. However for measurement in circular bases, the Pancharatnam
phase does not affect the Bell-CHSH violation.
