The Photodiode, Solar Cell, and Zener Diode; Zener Diode as a Voltage Regulator NEET Questions

Physics - Electronic Devices

The Photodiode, Solar Cell, and Zener Diode; Zener Diode as a Voltage Regulator MCQ Questions


13.
A solar cell is basically a:
A.
Photoresistor
B.
p-n junction operated in reverse bias for light detection
C.
Battery powered by sunlight
D.
p-n junction diode that generates emf when illuminated, with no external bias applied
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ANSWER :
D. p-n junction diode that generates emf when illuminated, with no external bias applied
14.
The principle of operation of a solar cell is:
A.
Piezoelectric effect
B.
Thermoelectric effect
C.
Photovoltaic effect
D.
Photoelectric effect
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ANSWER :
C. Photovoltaic effect
15.
Three basic processes involved in solar cell operation are:
A.
Emission, absorption, recombination
B.
Doping, diffusion, drift
C.
Generation, separation, and collection of charge carriers
D.
Heating, cooling, current flow
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ANSWER :
C. Generation, separation, and collection of charge carriers
16.
In a solar cell, the photon energy of incident light should be:
A.
Less than the band gap
B.
Greater than the band gap Eg of the semiconductor
C.
Equal to thermal energy kT
D.
Independent of band gap
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ANSWER :
B. Greater than the band gap Eg of the semiconductor
17.
Materials commonly used for solar cells include:
A.
Si, GaAs, CdTe, CdS, CIGS
B.
Glass, plastic, wood
C.
Water and salt
D.
Cu, Au, Ag
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ANSWER :
A. Si, GaAs, CdTe, CdS, CIGS
18.
The optimum band gap for a solar cell material is approximately:
A.
5 eV
B.
1.0 - 1.8 eV
C.
10 eV
D.
0 eV
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ANSWER :
B. 1.0 - 1.8 eV