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Physics Question 12 – NEET-UG 2023

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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 :

This question tests your knowledge of the fundamental working principles of two important semiconductor devices: photovoltaic cells and Zener diodes.

Step 1: Analyze Statement I (Photovoltaic Devices)✦ Active

Photovoltaic devices, commonly known as solar cells, are designed to convert light energy (optical radiation) directly into electrical energy through the photovoltaic effect. This statement is factually correct.

Step 2: Analyze Statement II (Zener Diode)○ Expand

A Zener diode is a special type of diode designed to reliably allow current to flow in the reverse direction when a certain reverse voltage (Zener voltage) is reached. It is specifically designed to operate in the reverse breakdown region, where it maintains a nearly constant voltage across its terminals, making it suitable for voltage regulation. This statement is also factually correct.

Step 3: Conclusion○ Expand

Since both Statement I and Statement II are correct, the most appropriate answer is the option that states both are correct.

💡 Teacher's Secret Hint

Remember the specific applications and operating regions for different semiconductor devices.

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