Target Exam

CUET

Subject

Physics

Chapter

Semiconductors and Electronic Devices

Question:

At equilibrium condition, the rate of generation of electron-hole pairs in Ge crystal

Options:

is more than rate of recombination of electron and hole pairs

is less than rate of recombination of electron and hole pairs

equals the rate of recombination of electron and hole pairs

is always zero

Correct Answer:

equals the rate of recombination of electron and hole pairs

Explanation:

The correct answer is Option (3) → equals the rate of recombination of electron and hole pairs

At equilibrium in a semiconductor (like Ge):

→ The number of electron-hole pairs generated per unit time = number of pairs recombining per unit time.

∴ Rate of generation = Rate of recombination

Correct option: equals the rate of recombination of electron and hole pairs.