68th BPSC Prelims (2023), question 108

🔬 Science & Technology

  1. Which of the following photoelectric devices is most suitable for digital applications?

    1. Photovoltaic cell
    2. Photoemitter
    3. Photodiode
    4. More than one of the above
    5. None of the above
    Show answer

    Answer: A — Photovoltaic cell

    The photovoltaic cell, with its simple on/off (voltage-generating) response, suits digital applications best.

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