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


7.
What is the principle behind the working of a solar cell?
A.
Photoelectric effect
B.
Thermoelectric effect
C.
Joule heating
D.
Magnetic induction
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ANSWER :
A. Photoelectric effect
8.
The Zener diode is primarily used for:
A.
Voltage regulation
B.
Current amplification
C.
Current rectification
D.
High-speed switching
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ANSWER :
A. Voltage regulation
9.
What happens when the reverse voltage across a Zener diode exceeds its breakdown voltage?
A.
It allows large reverse current
B.
It blocks current completely
C.
It stabilizes voltage
D.
It starts conducting in reverse bias
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ANSWER :
A. It allows large reverse current
10.
Which factor primarily affects the power output of a solar cell?
A.
Temperature
B.
Light intensity
C.
Junction size
D.
Doping level
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ANSWER :
B. Light intensity
11.
A Zener diode primarily operates in which region?

NEET - 2020

A.
Forward bias
B.
Saturation region
C.
Breakdown region
D.
Cutoff region
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ANSWER :
C. Breakdown region
12.
In a solar cell, the open-circuit voltage depends on:
A.
Bandgap energy
B.
Temperature
C.
Incident light
D.
Applied current
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ANSWER :
A. Bandgap energy