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  9. Q45

WBCS 2024 · Question 45 of 196

What is the efficiency of currently available commercial solar cells?

Science - Physics

  1. A0-5%
  2. B15-20%Correct
  3. C30-40%
  4. D80-90%

Answer: B. 15-20%

Explanation

Official WBPSC key (Series A): (B) 15-20%. Most commercially available solar panels installed worldwide utilize crystalline silicon technology, which exhibits an operational energy conversion efficiency typically ranging between 15% and 20%.

Source: WBCS (Exe) etc. (Prelim) 2024, Series A

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