Special Purpose Diodes
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365441 Read the Assertion and Reason carefully to mark the correct options given below:
Assertion :
Photo diodes are preferably operated in reverse bias condition for light intensity measurement.
Reason :
The current in the forward bias is more than the current in the reverse bias for a \(p-n\) junction diode.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365442 Conductivity of a photodiode starts changing only if the wavelength of incident light is less than \(660\,nm.\) The band gap of photodiode is found to be \(\left( {\frac{X}{8}} \right)eV.\) The value of \(X\) is
(Given, \(h = 6.6 \times {10^{ - 34}}\;Js,\,\,e = 1.6 \times {10^{ - 19}}C{\mkern 1mu} \,)\)

1 11
2 13
3 15
4 21
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365443 A light-emitting diode (LED) has a voltage drop of \(2V\) across it and passes a current of \(10\,\mu A,\) when it operates with a \(6V\) battery with a limiting resistor \(R\). What is the value of \(R\)?

1 \(200\,\Omega \)
2 \(100\,\Omega \)
3 \(400\,\Omega \)
4 \(400\,k\Omega \)
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365444 Given below are two statements
Statement A :
Photovoltaic devices can convert optical radiation into electricity.
Statement B :
Zener diode is designed to operate under reverse bias in breakdown region.

In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement A and Statement B are incorrect
2 Statement A is correct but Statement B is incorrect
3 Statement A is incorect but Statement B is correct
4 Both Statement A and Statement B are correct.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365441 Read the Assertion and Reason carefully to mark the correct options given below:
Assertion :
Photo diodes are preferably operated in reverse bias condition for light intensity measurement.
Reason :
The current in the forward bias is more than the current in the reverse bias for a \(p-n\) junction diode.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365442 Conductivity of a photodiode starts changing only if the wavelength of incident light is less than \(660\,nm.\) The band gap of photodiode is found to be \(\left( {\frac{X}{8}} \right)eV.\) The value of \(X\) is
(Given, \(h = 6.6 \times {10^{ - 34}}\;Js,\,\,e = 1.6 \times {10^{ - 19}}C{\mkern 1mu} \,)\)

1 11
2 13
3 15
4 21
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365443 A light-emitting diode (LED) has a voltage drop of \(2V\) across it and passes a current of \(10\,\mu A,\) when it operates with a \(6V\) battery with a limiting resistor \(R\). What is the value of \(R\)?

1 \(200\,\Omega \)
2 \(100\,\Omega \)
3 \(400\,\Omega \)
4 \(400\,k\Omega \)
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365444 Given below are two statements
Statement A :
Photovoltaic devices can convert optical radiation into electricity.
Statement B :
Zener diode is designed to operate under reverse bias in breakdown region.

In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement A and Statement B are incorrect
2 Statement A is correct but Statement B is incorrect
3 Statement A is incorect but Statement B is correct
4 Both Statement A and Statement B are correct.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365441 Read the Assertion and Reason carefully to mark the correct options given below:
Assertion :
Photo diodes are preferably operated in reverse bias condition for light intensity measurement.
Reason :
The current in the forward bias is more than the current in the reverse bias for a \(p-n\) junction diode.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365442 Conductivity of a photodiode starts changing only if the wavelength of incident light is less than \(660\,nm.\) The band gap of photodiode is found to be \(\left( {\frac{X}{8}} \right)eV.\) The value of \(X\) is
(Given, \(h = 6.6 \times {10^{ - 34}}\;Js,\,\,e = 1.6 \times {10^{ - 19}}C{\mkern 1mu} \,)\)

1 11
2 13
3 15
4 21
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365443 A light-emitting diode (LED) has a voltage drop of \(2V\) across it and passes a current of \(10\,\mu A,\) when it operates with a \(6V\) battery with a limiting resistor \(R\). What is the value of \(R\)?

1 \(200\,\Omega \)
2 \(100\,\Omega \)
3 \(400\,\Omega \)
4 \(400\,k\Omega \)
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365444 Given below are two statements
Statement A :
Photovoltaic devices can convert optical radiation into electricity.
Statement B :
Zener diode is designed to operate under reverse bias in breakdown region.

In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement A and Statement B are incorrect
2 Statement A is correct but Statement B is incorrect
3 Statement A is incorect but Statement B is correct
4 Both Statement A and Statement B are correct.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365441 Read the Assertion and Reason carefully to mark the correct options given below:
Assertion :
Photo diodes are preferably operated in reverse bias condition for light intensity measurement.
Reason :
The current in the forward bias is more than the current in the reverse bias for a \(p-n\) junction diode.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365442 Conductivity of a photodiode starts changing only if the wavelength of incident light is less than \(660\,nm.\) The band gap of photodiode is found to be \(\left( {\frac{X}{8}} \right)eV.\) The value of \(X\) is
(Given, \(h = 6.6 \times {10^{ - 34}}\;Js,\,\,e = 1.6 \times {10^{ - 19}}C{\mkern 1mu} \,)\)

1 11
2 13
3 15
4 21
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365443 A light-emitting diode (LED) has a voltage drop of \(2V\) across it and passes a current of \(10\,\mu A,\) when it operates with a \(6V\) battery with a limiting resistor \(R\). What is the value of \(R\)?

1 \(200\,\Omega \)
2 \(100\,\Omega \)
3 \(400\,\Omega \)
4 \(400\,k\Omega \)
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS

365444 Given below are two statements
Statement A :
Photovoltaic devices can convert optical radiation into electricity.
Statement B :
Zener diode is designed to operate under reverse bias in breakdown region.

In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement A and Statement B are incorrect
2 Statement A is correct but Statement B is incorrect
3 Statement A is incorect but Statement B is correct
4 Both Statement A and Statement B are correct.
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