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Which of the following is not a source of radiant energy?(a) Tungsten-mercury lamp(b) Tungsten lamp(c) Xenon-mercury arc(d) Deuterium discharge lampI got this question by my college director while I was bunking the class.This interesting question is from Monitoring Labour Activity topic in section Foetal Monitoring Instruments of Biomedical Instrumentation

Answer» RIGHT choice is (a) Tungsten-mercury lamp

The best explanation: RADIANT just MEANS energy that can MOVE from one place to another without a medium to carry it. A source of radiant energy, which MAY be a tungsten lamp, a xenon-mercury arc, hydrogen or deuterium discharge lamp, etc.


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