<prompt> Faded tattoo mark can be visualized by -Ultraviolet raysSpectrophotometerOrdinary lightX-ray  <response>: Ans. is a i.e., Ultraviolet rays Latent tattoo marks faded marks can be visualized by:-Use of ultraviolet lightInfrared photograpy Rubbing the pa and examining under magnifying glassIf tattoo marks are obscured by decomposition they can be visualized by treating with 3 H202.Tattoo marks can be developed by treating the skin by 0.5 caustic potash.Histopathology of local lymph nodes for pigment. 