Question

The efficiency of the modern solar cells from selenium is up to

• A. $25\%$
• B. $40\%$
• C. $65\%$
• D. $80\%$

Answer 1

The correct option is A

$25\%$

1. Solar cell efficiency is a measure of how much of the sun's energy certain cells convert into usable electricity.
2. Modern cells (solar cells) have the efficiency up to $25\%$.
3. Hence, the efficiency of the modern solar cells from selenium is up to $25\%$.

Thus, the correct answer is option (A).