1. | Electrons are minority carriers and pentavalent atoms are dopants. |
2. | Holes are minority carriers and pentavalent atoms are dopants. |
3. | Holes are the majority carriers and trivalent atoms are dopants. |
4. | Electrons are the majority carriers and trivalent atoms are dopants. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | the antimony becomes an acceptor atom |
2. | there will be more free electrons than holes in the semiconductor |
3. | its resistance is increased |
4. | it becomes a \(p\small{-}\)type semiconductor |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | \(p\)-type with electron concentration \(n_e=5\times10^9~\text{m}^{-3}\). |
2. | \(n\)-type with electron concentration \(n_e=5\times10^{22}~\text{m}^{-3}\). |
3. | \(p\)-type with electron concentration \(n_e=2.5\times10^{10}~\text{m}^{-3}\). |
4. | \(n\)-type with electron concentration \(n_e=2.5\times10^{23}~\text{m}^{-3}\). |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following statements is false?
1. | Pure Si doped with trivalent impurities gives a p-type semiconductor. |
2. | The majority of carriers in an n-type semiconductor are holes. |
3. | The minority carriers in a p-type semiconductor are electrons. |
4. | The resistance of intrinsic semiconductors decreases with an increase in temperature. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology