1• They can undergo reflection, refraction, interference, diffraction and Polarisation
2•They affect photo graphic plates
3• They cast shadows of the object falling in their path due to the reason that they travel in a straight line
4•They can cause photoelectric effect
5•They Ionise the gas through which they pass
6•They can penetrate the material that are opaque to visible or UV light
7•They can cause fluorescence in certain material like zinc sulphide, calcium tungstate
8•X ray the electromagnetic wave of very short wavelength, earth atmosphere opaque for X ray
9•X ray are accompanied by fast moving electrons