Wavelength range of infrared radiation is
700nm to 1mm
380nm to 750nm
170nm to 380nm
200nm to 700nm
As we have learnt,
Infrared Radiations -
Medium is not requuired for the propagation of these radiation.
Infrared radiation extends from the nominal red edge of the visible spectrum at 700 nanometers (nm) to 1 millimeter (mm).