In this video, we dive deep into a fascinating conceptual problem from IIT-JEE Main – 1st Shift, 27th July 2022, that tests your understanding of electrostatics and oscillatory motion. This question involves a unique blend of Coulomb’s Law and Simple Harmonic Motion (SHM), and is a must-practice for all aspirants preparing for IIT-JEE, NEET, or any other major engineering and medical entrance exams in India.
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IIT-JEE Main - Previous Year's Question Solution
(Chapter : Electric Charge and Field, Class 12)
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📌 The question goes like this:
Two identical positive charges Q each are fixed at a distance of 2a apart from each other. Another point charge q₀ with mass m is placed at the midpoint between the two fixed charges. For a small displacement along the line joining the fixed charges, the charge q₀ executes SHM. The time period of oscillation of charge q₀ will be:
[ IIT-JEE Main – 1st Shift – 27th July 2022 ]
This question is incredibly relevant for Class 12 students from boards like CBSE, ICSE, Maharashtra Board, Bihar Board, Uttar Pradesh Board, Rajasthan Board, Madhya Pradesh Board, and West Bengal Board. Not only does it cover key portions of the Class 12 Physics syllabus, but it also reinforces the way electric forces behave when combined with mechanical motion concepts like SHM.
The question challenges students to analyze the behavior of a charged particle placed in a symmetric electric field and how it responds when slightly displaced. Such questions emphasize deep conceptual clarity, which is critical for performing well in the IIT-JEE Main, IIT-JEE Advanced, and even NEET Physics sections. This video is part of our ongoing series that breaks down IIT JEE PYQs (Previous Year Questions) in an intuitive and accessible way — especially for Hindi-speaking students.
The explanation in this video is done in Hindi, and it is designed to help you grasp the fundamentals of electrostatics, symmetry in electric fields, and restoring forces that lead to oscillatory motion. If you are looking to build a rock-solid understanding of how physics works in real-world situations, this is the perfect video for you.
By watching this video, students will gain:
Better clarity on how electrostatic forces work in symmetric setups
Insight into the conditions under which SHM occurs in electrostatic environments
A strong grasp of problem-solving strategies that are commonly tested in IIT-JEE and NEET exams
Whether you're a board exam student or a competitive aspirant, understanding this concept will enhance your ability to solve not only similar problems but also build confidence in tackling physics numericals with a conceptual approach.
The content is also aligned with the latest exam trends and helps students prepare strategically. By practicing problems like these, students can improve both their speed and accuracy in the exam hall. So, if you're a student of Class 12 from CBSE or ICSE, or from any major Indian state board, and if you're aiming for success in IIT-JEE Main, IIT-JEE Advanced, or NEET, this video is a must-watch.
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