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Which of the following detectors does not require a battery and is also known as barrier layer cell?(a) Photomultiplier tube(b) Photovoltaic cell(c) Photoemissive tubes(d) Photo reflectorThe question was asked in an interview.My question is from Absorption Instrumentation and Block Diagram Representation topic in division Colorimetry and Spectrometry of Analytical Instrumentation

Answer» RIGHT option is (b) PHOTOVOLTAIC cell

The BEST explanation: Photovoltaic cell does not require a battery for operation. Its working is entirely different from Photomultiplier tube or Photoemissive tubes.


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