PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365433
Statement A : The semiconductor used for fabrication of visible LEDs must at least have a band gap of 1.7 \(eV\). Statement B : The spectral range of visible light is from 1.8 \(eV\) to 3.1 \(eV\).
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
Explanation:
So, option (3) is correct.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365434
A \(p\)-\(n\) photodiode is made of a material with a band gap of 2 \(eV\). What is the minimum frequency of radiation that can be absorbed by the material?
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365435
Assertion : Photodiode and solar cell works on same mechanism Reason : Area is large for solar cell.
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 Both Assertion and Reason are incorrect.
Explanation:
A \(pn\) junction photodiode can be operated under photovoltaic conditions similar to that of a solar cell. The current - voltage characteristics of a photodiode and solar cell under illumination are also similar. When light energy falls on the solar cell, then it converts solar energy into electrical energy. But the area of solar cell is larger, so that it can absorb more amount of sunlight and hence more amount of electrical energy is obtained. Hence, Assertion and Reason both are true but Reason is not the correct explanation of Assertion.
AIIMS - 2019
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365436
The forbidden energy gap in \(Ge\) in \(0.72\,eV\). Given,\(hc = 12400\,eV - \mathop A\limits^ \circ \) . The maximum wavelength of radiation that will generate electron hole pair is
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365433
Statement A : The semiconductor used for fabrication of visible LEDs must at least have a band gap of 1.7 \(eV\). Statement B : The spectral range of visible light is from 1.8 \(eV\) to 3.1 \(eV\).
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
Explanation:
So, option (3) is correct.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365434
A \(p\)-\(n\) photodiode is made of a material with a band gap of 2 \(eV\). What is the minimum frequency of radiation that can be absorbed by the material?
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365435
Assertion : Photodiode and solar cell works on same mechanism Reason : Area is large for solar cell.
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 Both Assertion and Reason are incorrect.
Explanation:
A \(pn\) junction photodiode can be operated under photovoltaic conditions similar to that of a solar cell. The current - voltage characteristics of a photodiode and solar cell under illumination are also similar. When light energy falls on the solar cell, then it converts solar energy into electrical energy. But the area of solar cell is larger, so that it can absorb more amount of sunlight and hence more amount of electrical energy is obtained. Hence, Assertion and Reason both are true but Reason is not the correct explanation of Assertion.
AIIMS - 2019
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365436
The forbidden energy gap in \(Ge\) in \(0.72\,eV\). Given,\(hc = 12400\,eV - \mathop A\limits^ \circ \) . The maximum wavelength of radiation that will generate electron hole pair is
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365433
Statement A : The semiconductor used for fabrication of visible LEDs must at least have a band gap of 1.7 \(eV\). Statement B : The spectral range of visible light is from 1.8 \(eV\) to 3.1 \(eV\).
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
Explanation:
So, option (3) is correct.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365434
A \(p\)-\(n\) photodiode is made of a material with a band gap of 2 \(eV\). What is the minimum frequency of radiation that can be absorbed by the material?
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365435
Assertion : Photodiode and solar cell works on same mechanism Reason : Area is large for solar cell.
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 Both Assertion and Reason are incorrect.
Explanation:
A \(pn\) junction photodiode can be operated under photovoltaic conditions similar to that of a solar cell. The current - voltage characteristics of a photodiode and solar cell under illumination are also similar. When light energy falls on the solar cell, then it converts solar energy into electrical energy. But the area of solar cell is larger, so that it can absorb more amount of sunlight and hence more amount of electrical energy is obtained. Hence, Assertion and Reason both are true but Reason is not the correct explanation of Assertion.
AIIMS - 2019
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365436
The forbidden energy gap in \(Ge\) in \(0.72\,eV\). Given,\(hc = 12400\,eV - \mathop A\limits^ \circ \) . The maximum wavelength of radiation that will generate electron hole pair is
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365433
Statement A : The semiconductor used for fabrication of visible LEDs must at least have a band gap of 1.7 \(eV\). Statement B : The spectral range of visible light is from 1.8 \(eV\) to 3.1 \(eV\).
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
Explanation:
So, option (3) is correct.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365434
A \(p\)-\(n\) photodiode is made of a material with a band gap of 2 \(eV\). What is the minimum frequency of radiation that can be absorbed by the material?
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365435
Assertion : Photodiode and solar cell works on same mechanism Reason : Area is large for solar cell.
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 Both Assertion and Reason are incorrect.
Explanation:
A \(pn\) junction photodiode can be operated under photovoltaic conditions similar to that of a solar cell. The current - voltage characteristics of a photodiode and solar cell under illumination are also similar. When light energy falls on the solar cell, then it converts solar energy into electrical energy. But the area of solar cell is larger, so that it can absorb more amount of sunlight and hence more amount of electrical energy is obtained. Hence, Assertion and Reason both are true but Reason is not the correct explanation of Assertion.
AIIMS - 2019
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365436
The forbidden energy gap in \(Ge\) in \(0.72\,eV\). Given,\(hc = 12400\,eV - \mathop A\limits^ \circ \) . The maximum wavelength of radiation that will generate electron hole pair is
