CUET · PHYSICS · PYQ PAPER 2025
At equilibrium condition, the rate of generation of electron-hole pairs in Ge crystal
- A is more than rate of recombination of electron and hole pairs
- B is less than rate of recombination of electron and hole pairs
- C equals the rate of recombination of electron and hole pairs
- D is always zero
Answer & Solution
Correct Answer
(C) equals the rate of recombination of electron and hole pairs
Step-by-step Solution
Detailed explanation
At thermal equilibrium, the concentration of charge carriers in a semiconductor remains constant. This occurs because the rate of generation (creation of electron-hole pairs due to thermal energy) exactly equals the rate of recombination (electrons falling back into holes).
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