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State PCS PYQPrelims 2023

BPSC – Combined Competitive Examination · Question 16

A photoelectric cell is a device which:

  1. converts light energy into electrical energy
  2. converts electrical energy into light energy
  3. stores light energy
  4. None of the above
Show answer & explanation

Answer: (A) converts light energy into electrical energy

Explanation

Photoelectric cells convert incident light into electric current (used in sensors, automatic doors, solar cells).

  • (A) Correct

    Correct: it uses the photoelectric effect to produce current from light.

  • (B) Incorrect

    Wrong: that is a bulb/LED.

  • (C) Incorrect

    Wrong: it does not store energy.

  • (D) Incorrect

    Wrong: option A is correct.