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Question
Which of the following is not the characteristics of Indium arsenide photovoltaic detector used in infrared analyzers for hydrocarbons?
Options:
A .  It operates at ambient temperature
B .  Has maximum detectivity at 3.4µm
C .  Sensitivity increases at longer wavelength
D .  It has no response to radiation of wavelength greater than 4µm
Answer: Option C
Answer: (c).Sensitivity increases at longer wavelength

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