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According to General Relativity, there are three factors namely mass,rotation and charge that can influence the path of light ray. Many authorsshowed that there is another factor which can influence the path of light raynamely gravitomagnetism. Here we discuss the effect of a rotating body withnon-zero (Kerr- Taub-NUT) magnetic field on the motion of light ray. We use thenull geodesic of photon method and obtain the deflection angle of light ray forsuch a body up to fourth order term in the equatorial plane. Our calculationshows that magnetism has a noticeable effect on the path of light ray. If weset the magnetism equal to zero, our expression of bending angle reduces to theKerr bending angle. However, we get non-zero bending angle for a hypotheticalmass less, magnetic body.

The trajectory of light ray under Kerr-Taub-NUT space time