Question 20: Given below are two statements:
Statement I: Photovoltaic devices can convert optical radiation into electricity.
Statement II : 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) Statement I is correct but Statement II is incorrect.
(2) Statement I is incorrect but Statement II is correct.
(3) Both Statement I and Statement II are correct.
(4) Both Statement I and Statement II are incorrect.
Answer: Option (3)
Explanation:
Photovoltaic devices work on the principle of the photoelectric effect and
are capable of converting optical radiation directly into electrical energy.
Hence, Statement I is correct.
A Zener diode is a specially designed p-n junction diode that is intended to operate in the reverse bias condition in its breakdown region.
In this region, the Zener diode maintains a nearly constant voltage and is widely used for voltage regulation.
Hence, Statement II is also correct.
Therefore, both Statement I and Statement II are correct, and the correct answer is Option (3).