Energy Bands (Valance, Conduction, Energy Gap), Conductor Insulator and Semiconductor
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Semiconductor Electronics Material Devices and Simple Circuits

150522 A pure semiconductor has equal electron and hole concentration of \(10^{16} \mathrm{~m}^{-3}\). Doping by gallium increases \(n_h\) to \(5 \times 10^{22} \mathrm{~m}^{-3}\). Then, the value of \(n_e\) in the doped semiconductor is

1 \(10^6 / \mathrm{m}^3\)
2 \(10^{22} / \mathrm{m}^3\)
3 \(2 \times 10^6 / \mathrm{m}^3\)
4 \(2 \times 10^9 / \mathrm{m}^3\)
AIIMS-26.05.2019(M) Shift-1
Semiconductor Electronics Material Devices and Simple Circuits

150523 Assertion: The current gain in common base circuit is always less than one.
Reason: At constant collector voltage the change in collector current is more than the change in emitter current.

1 If both Assertion and Reason are correct and reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion
3 If Assertion is correct but Reason is incorrect
4 If both the Assertion and Reason are incorrect
AIIMS-27.05.2018(M)
Semiconductor Electronics Material Devices and Simple Circuits

150520 Assertion: Binding energy increase with increase in atomic mass number.
Reason: Density of nucleus increase with increase in atomic mass number.

1 If both assertion and reason are true and reason is the correct explanation of assertion.
2 If both assertion and reason are true but reason is not the correct explanation of assertion.
3 If assertion is true but reason is false.
4 If both assertion and reason are false.
AIIMS-26.05.2019(E) Shift-2
Semiconductor Electronics Material Devices and Simple Circuits

150526 Assertion: The resistivity of a semi-conductor increases with temperature
Reason: The atoms of semi-conductor vibrate with larger amplitude at higher temperatures there by increasing its resistivity.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason in not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2003
Semiconductor Electronics Material Devices and Simple Circuits

150527 What is the conductivity of a semiconductor if electron density \(=5 \times 10^{12} / \mathrm{cm}^3\) and hole density \(=8 \times 10^{13} / \mathrm{cm}^3\left(\mu_{\mathrm{e}}=2.3 \mathrm{~m}^2 \mathrm{~V}^{-1} \mathrm{~s}^{-1}, \mu_{\mathrm{h}}=0.01 \mathrm{~m}^2 \mathrm{~V}^{-1} \mathrm{~S}^{-}\right.\) 1)

1 \(5.634 \Omega^{-1} \mathrm{~m}^{-1}\)
2 \(1.968 \Omega^{-1} \mathrm{~m}^{-1}\)
3 \(3.421 \Omega^{-1} \mathrm{~m}^{-1}\)
4 \(8.964 \Omega^{-1} \mathrm{~m}^{-1}\)
AIIMS-26.05.2018(M)
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Semiconductor Electronics Material Devices and Simple Circuits

150522 A pure semiconductor has equal electron and hole concentration of \(10^{16} \mathrm{~m}^{-3}\). Doping by gallium increases \(n_h\) to \(5 \times 10^{22} \mathrm{~m}^{-3}\). Then, the value of \(n_e\) in the doped semiconductor is

1 \(10^6 / \mathrm{m}^3\)
2 \(10^{22} / \mathrm{m}^3\)
3 \(2 \times 10^6 / \mathrm{m}^3\)
4 \(2 \times 10^9 / \mathrm{m}^3\)
AIIMS-26.05.2019(M) Shift-1
Semiconductor Electronics Material Devices and Simple Circuits

150523 Assertion: The current gain in common base circuit is always less than one.
Reason: At constant collector voltage the change in collector current is more than the change in emitter current.

1 If both Assertion and Reason are correct and reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion
3 If Assertion is correct but Reason is incorrect
4 If both the Assertion and Reason are incorrect
AIIMS-27.05.2018(M)
Semiconductor Electronics Material Devices and Simple Circuits

150520 Assertion: Binding energy increase with increase in atomic mass number.
Reason: Density of nucleus increase with increase in atomic mass number.

1 If both assertion and reason are true and reason is the correct explanation of assertion.
2 If both assertion and reason are true but reason is not the correct explanation of assertion.
3 If assertion is true but reason is false.
4 If both assertion and reason are false.
AIIMS-26.05.2019(E) Shift-2
Semiconductor Electronics Material Devices and Simple Circuits

150526 Assertion: The resistivity of a semi-conductor increases with temperature
Reason: The atoms of semi-conductor vibrate with larger amplitude at higher temperatures there by increasing its resistivity.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason in not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2003
Semiconductor Electronics Material Devices and Simple Circuits

150527 What is the conductivity of a semiconductor if electron density \(=5 \times 10^{12} / \mathrm{cm}^3\) and hole density \(=8 \times 10^{13} / \mathrm{cm}^3\left(\mu_{\mathrm{e}}=2.3 \mathrm{~m}^2 \mathrm{~V}^{-1} \mathrm{~s}^{-1}, \mu_{\mathrm{h}}=0.01 \mathrm{~m}^2 \mathrm{~V}^{-1} \mathrm{~S}^{-}\right.\) 1)

1 \(5.634 \Omega^{-1} \mathrm{~m}^{-1}\)
2 \(1.968 \Omega^{-1} \mathrm{~m}^{-1}\)
3 \(3.421 \Omega^{-1} \mathrm{~m}^{-1}\)
4 \(8.964 \Omega^{-1} \mathrm{~m}^{-1}\)
AIIMS-26.05.2018(M)
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Semiconductor Electronics Material Devices and Simple Circuits

150522 A pure semiconductor has equal electron and hole concentration of \(10^{16} \mathrm{~m}^{-3}\). Doping by gallium increases \(n_h\) to \(5 \times 10^{22} \mathrm{~m}^{-3}\). Then, the value of \(n_e\) in the doped semiconductor is

1 \(10^6 / \mathrm{m}^3\)
2 \(10^{22} / \mathrm{m}^3\)
3 \(2 \times 10^6 / \mathrm{m}^3\)
4 \(2 \times 10^9 / \mathrm{m}^3\)
AIIMS-26.05.2019(M) Shift-1
Semiconductor Electronics Material Devices and Simple Circuits

150523 Assertion: The current gain in common base circuit is always less than one.
Reason: At constant collector voltage the change in collector current is more than the change in emitter current.

1 If both Assertion and Reason are correct and reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion
3 If Assertion is correct but Reason is incorrect
4 If both the Assertion and Reason are incorrect
AIIMS-27.05.2018(M)
Semiconductor Electronics Material Devices and Simple Circuits

150520 Assertion: Binding energy increase with increase in atomic mass number.
Reason: Density of nucleus increase with increase in atomic mass number.

1 If both assertion and reason are true and reason is the correct explanation of assertion.
2 If both assertion and reason are true but reason is not the correct explanation of assertion.
3 If assertion is true but reason is false.
4 If both assertion and reason are false.
AIIMS-26.05.2019(E) Shift-2
Semiconductor Electronics Material Devices and Simple Circuits

150526 Assertion: The resistivity of a semi-conductor increases with temperature
Reason: The atoms of semi-conductor vibrate with larger amplitude at higher temperatures there by increasing its resistivity.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason in not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2003
Semiconductor Electronics Material Devices and Simple Circuits

150527 What is the conductivity of a semiconductor if electron density \(=5 \times 10^{12} / \mathrm{cm}^3\) and hole density \(=8 \times 10^{13} / \mathrm{cm}^3\left(\mu_{\mathrm{e}}=2.3 \mathrm{~m}^2 \mathrm{~V}^{-1} \mathrm{~s}^{-1}, \mu_{\mathrm{h}}=0.01 \mathrm{~m}^2 \mathrm{~V}^{-1} \mathrm{~S}^{-}\right.\) 1)

1 \(5.634 \Omega^{-1} \mathrm{~m}^{-1}\)
2 \(1.968 \Omega^{-1} \mathrm{~m}^{-1}\)
3 \(3.421 \Omega^{-1} \mathrm{~m}^{-1}\)
4 \(8.964 \Omega^{-1} \mathrm{~m}^{-1}\)
AIIMS-26.05.2018(M)
NEET DIGITAL LIBRARY
Semiconductor Electronics Material Devices and Simple Circuits

150522 A pure semiconductor has equal electron and hole concentration of \(10^{16} \mathrm{~m}^{-3}\). Doping by gallium increases \(n_h\) to \(5 \times 10^{22} \mathrm{~m}^{-3}\). Then, the value of \(n_e\) in the doped semiconductor is

1 \(10^6 / \mathrm{m}^3\)
2 \(10^{22} / \mathrm{m}^3\)
3 \(2 \times 10^6 / \mathrm{m}^3\)
4 \(2 \times 10^9 / \mathrm{m}^3\)
AIIMS-26.05.2019(M) Shift-1
Semiconductor Electronics Material Devices and Simple Circuits

150523 Assertion: The current gain in common base circuit is always less than one.
Reason: At constant collector voltage the change in collector current is more than the change in emitter current.

1 If both Assertion and Reason are correct and reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion
3 If Assertion is correct but Reason is incorrect
4 If both the Assertion and Reason are incorrect
AIIMS-27.05.2018(M)
Semiconductor Electronics Material Devices and Simple Circuits

150520 Assertion: Binding energy increase with increase in atomic mass number.
Reason: Density of nucleus increase with increase in atomic mass number.

1 If both assertion and reason are true and reason is the correct explanation of assertion.
2 If both assertion and reason are true but reason is not the correct explanation of assertion.
3 If assertion is true but reason is false.
4 If both assertion and reason are false.
AIIMS-26.05.2019(E) Shift-2
Semiconductor Electronics Material Devices and Simple Circuits

150526 Assertion: The resistivity of a semi-conductor increases with temperature
Reason: The atoms of semi-conductor vibrate with larger amplitude at higher temperatures there by increasing its resistivity.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason in not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2003
Semiconductor Electronics Material Devices and Simple Circuits

150527 What is the conductivity of a semiconductor if electron density \(=5 \times 10^{12} / \mathrm{cm}^3\) and hole density \(=8 \times 10^{13} / \mathrm{cm}^3\left(\mu_{\mathrm{e}}=2.3 \mathrm{~m}^2 \mathrm{~V}^{-1} \mathrm{~s}^{-1}, \mu_{\mathrm{h}}=0.01 \mathrm{~m}^2 \mathrm{~V}^{-1} \mathrm{~S}^{-}\right.\) 1)

1 \(5.634 \Omega^{-1} \mathrm{~m}^{-1}\)
2 \(1.968 \Omega^{-1} \mathrm{~m}^{-1}\)
3 \(3.421 \Omega^{-1} \mathrm{~m}^{-1}\)
4 \(8.964 \Omega^{-1} \mathrm{~m}^{-1}\)
AIIMS-26.05.2018(M)
Join With Us for More Updates
Semiconductor Electronics Material Devices and Simple Circuits

150522 A pure semiconductor has equal electron and hole concentration of \(10^{16} \mathrm{~m}^{-3}\). Doping by gallium increases \(n_h\) to \(5 \times 10^{22} \mathrm{~m}^{-3}\). Then, the value of \(n_e\) in the doped semiconductor is

1 \(10^6 / \mathrm{m}^3\)
2 \(10^{22} / \mathrm{m}^3\)
3 \(2 \times 10^6 / \mathrm{m}^3\)
4 \(2 \times 10^9 / \mathrm{m}^3\)
AIIMS-26.05.2019(M) Shift-1
Semiconductor Electronics Material Devices and Simple Circuits

150523 Assertion: The current gain in common base circuit is always less than one.
Reason: At constant collector voltage the change in collector current is more than the change in emitter current.

1 If both Assertion and Reason are correct and reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion
3 If Assertion is correct but Reason is incorrect
4 If both the Assertion and Reason are incorrect
AIIMS-27.05.2018(M)
Semiconductor Electronics Material Devices and Simple Circuits

150520 Assertion: Binding energy increase with increase in atomic mass number.
Reason: Density of nucleus increase with increase in atomic mass number.

1 If both assertion and reason are true and reason is the correct explanation of assertion.
2 If both assertion and reason are true but reason is not the correct explanation of assertion.
3 If assertion is true but reason is false.
4 If both assertion and reason are false.
AIIMS-26.05.2019(E) Shift-2
Semiconductor Electronics Material Devices and Simple Circuits

150526 Assertion: The resistivity of a semi-conductor increases with temperature
Reason: The atoms of semi-conductor vibrate with larger amplitude at higher temperatures there by increasing its resistivity.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason in not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2003
Semiconductor Electronics Material Devices and Simple Circuits

150527 What is the conductivity of a semiconductor if electron density \(=5 \times 10^{12} / \mathrm{cm}^3\) and hole density \(=8 \times 10^{13} / \mathrm{cm}^3\left(\mu_{\mathrm{e}}=2.3 \mathrm{~m}^2 \mathrm{~V}^{-1} \mathrm{~s}^{-1}, \mu_{\mathrm{h}}=0.01 \mathrm{~m}^2 \mathrm{~V}^{-1} \mathrm{~S}^{-}\right.\) 1)

1 \(5.634 \Omega^{-1} \mathrm{~m}^{-1}\)
2 \(1.968 \Omega^{-1} \mathrm{~m}^{-1}\)
3 \(3.421 \Omega^{-1} \mathrm{~m}^{-1}\)
4 \(8.964 \Omega^{-1} \mathrm{~m}^{-1}\)
AIIMS-26.05.2018(M)