CUET · PHYSICS · PYQ PAPER 2025
Eg (energy band-gap) for silicon is greater than that for germanium. Therefore, it can be concluded that at room temperature:
- A a greater number of electron hole pairs will be generated in silicon than in germanium at room temperature
- B less number of electron hole pairs will be generated in silicon than in germanium at room temperature
- C an equal number of electron hole pairs will be generated in both at lower temperatures
- D an equal number of electron hole pairs will be generated in both at higher temperatures
Answer & Solution
Correct Answer
(B) less number of electron hole pairs will be generated in silicon than in germanium at room temperature
Step-by-step Solution
Detailed explanation
A larger energy band-gap \(\left(E_g\right)\) means more energy is required for electrons to transition from the valence band to the conduction band. Since Silicon has a higher \(E_g\) than Germanium, fewer electrons can gain enough thermal energy at room temperature to create…
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