  We derive in this an expression for the rotation of plane of polarization, of
an electromagnetic wave, induced by the field of a gravitational wave
propagating along the same direction $\approx \f{G\mu d^2\Omega^4}{3\o}$, $\o$
and $\Omega$ being their respective frequencies using the geometrical optics
limit of the wave equation for fields. Estimating the effect for the case of
pulses from binary pulsars, one finds it too small to be observable, there
could be other sources like inspiralling binary or an asymmetric neutron star
where the effect could be in the observable region.
