JEE Mains · Physics · STD 12 - Semicondutor electronics
- JEE Mains 2025
- Easy
- MCQ
Consider a n-type semiconductor in which \(\mathrm{n}_{\mathrm{e}}\) and \(\mathrm{n}_{\mathrm{h}}\) are number of electrons and holes, respectively.
(A) Holes are minority carriers
(B) The dopant is a pentavalent atom
(C) \(\mathrm{n}_{\mathrm{e}} \mathrm{n}_{\mathrm{h}} \neq \mathrm{n}_{\mathrm{i}}^2\)
(where \(n_i\) is number of electrons or holes in semiconductor when it is intrinsic form)
(D) \(\mathrm{n}_{\mathrm{e}} \mathrm{n}_{\mathrm{h}} \geq \mathrm{n}_{\mathrm{i}}^2\)
(E) The holes are not generated due to the donors Choose the correct answer from the options given below :
Pick an option to check your answer.
Answer & Solution
Correct Answer
(C) (A), (B), (E) only
Step-by-step Solution
Detailed explanation
(A) n type semiconductor holes are minority carriers and \(\mathrm{e}^{-}\)are majority carriers
(B) Dopant are pentavalent atom.
(C) \(\mathrm{n}_{\mathrm{e}} \cdot \mathrm{n}_{\mathrm{h}}=\mathrm{n}_{\mathrm{i}}^2\) for intrinsic semiconductor
(E) In \(n\) type semiconductor primary source of holes generation are thermal excitation.
(B) Dopant are pentavalent atom.
(C) \(\mathrm{n}_{\mathrm{e}} \cdot \mathrm{n}_{\mathrm{h}}=\mathrm{n}_{\mathrm{i}}^2\) for intrinsic semiconductor
(E) In \(n\) type semiconductor primary source of holes generation are thermal excitation.
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