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In the radiation source, for work in the ultraviolet region, a _______ is used.(a) Tungsten lamp(b) Xenon-mercury arc(c) Deuterium discharge lamp(d) Hydrogen arcThis question was posed to me in an internship interview.Question is taken from Methods of Monitoring Foetal Heart Rate topic in section Foetal Monitoring Instruments of Biomedical Instrumentation

Answer»

The CORRECT ANSWER is (c) Deuterium discharge lamp

Best explanation: For work in the ULTRAVIOLET region, a hydrogen or deuterium discharge lamp is used. In these LAMPS, the envelope material of the lamp PUTS a limit on the smallest wavelength which can be transmitted.



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