Semiconductor Electronics

CBSE Class 12 · Physics · 24 past questions

8 of 24 · show all

1. Q5 2025

   Questions number 13 to 16 are Assertion (A) and Reason (R) type questions. Two statements are given — one…

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2. Q10 2025

   Assertion (A) : We cannot form a p-n junction diode by taking a slab of a p-type semiconductor and physically…

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3. Q11 2025

   A p-type Si semiconductor is made by doping an average of one dopant atom per $5 \times 10^7$ silicon atoms.…

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4. Q12 2024

   Si is doped with a pentavalent element. The energy required to set the additional electron free is about…

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5. Q14 2024

   Suppose a pure Si crystal has $5 \times 10^{28}$ atoms $\text{m}^{-3}$. It is doped by 1 ppm concentration of…

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6. Q15 2024

   Ge is doped with As. Due to doping…

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7. Q19 2023

   At a certain temperature in an intrinsic semiconductor, the electrons and holes concentration is…

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8. Q22 2023

   When an intrinsic semiconductor is doped with a small amount of trivalent impurity, then…

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