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 reflector
Answer:B
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 reflector
Explanation: Photovoltaic cell does not require a battery for operation. Its working is entirely different from Photomultiplier tube or Photoemissive tubes.