Verified Solution • 2025–26 Session moderate

QJEEM20Ph617d: JEE Main 2020 Physics - Class 12 JEEM20Ph617d Solution: Take the breakdown voltage of the zener diode used in the given …

Take the breakdown voltage of the
zener diode used in the given circuit as 6V.
For the input voltage shown in figure below,
the time variation of the output voltage is:
(Graphs drawn are schematic and not to scale) JEE Main 2020 (Online) 4th September Morning Slot Physics - Semiconductor Question 139 English

Multiple Choice Options

  • A https://ik.imagekit.io/novatra/photos/3747907038d0983dd1254fc365c641ddc04f60ef6169f3151ad0308017ccaa6a.webp
  • B https://ik.imagekit.io/novatra/photos/93d5a8a2a872fc607e8b64d1c48c39d7d7855277b173532230342215cb66655b.webp
  • C https://ik.imagekit.io/novatra/photos/11bf00c9bc1c6e889f6d12290bcc40bc68204f2e765bd42b78b59d82e1f03289.webp
  • D https://ik.imagekit.io/novatra/photos/ecc2991aafa037c5d47cd30c4abde9615ed4e7e158257b2f6a46a5a93679101c.webp

Step-by-Step Verified Solution

As there are two Zener diodes in reverse polarity so if one is in forward bias the other will be in reverse bias and above 6V the reverse bias will too be in conduction mode. Therefore when voltage is more than 6V the output will be constant. And when it is less than 6V it will follow the input voltage so correct answer is (C).

Related Learning Resources & Exam Preparation

JEE Main PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring