electromagnetic spectrum, photodetector, performance parameters, photodiode, photomultiplier tube, application, source of light: incandescent solid lamp, Bunsen flame, Discharge tubes, sodium vapor lamp, mercury vapor lamp, Cold cathode tube. https://www.linkedin.com/in/preeti-choudhary-266414182/ https://www.instagram.com/chaudharypreeti1997/ https://www.facebook.com/profile.php?id=100013419194533 https://twitter.com/preetic27018281 Please like, share, comment and follow. stay connected If any query then contact: chaudharypreeti1997@gmail.com Thanking-You Preeti Choudhary