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Vector Definitions
Class XI | Foundation Students
Graph Reading in Kinematics
Class XI | JEE & NEET
Gauss Theorem Statement
Class XII | JEE & NEET
Problems Form – Irodov
Class XI | JEE Advanced
Vectors - Lecture 1
Repeaters NEET| JEE
Offline Physics Classes in Ranchi
Join in-person classes with Saurabh Sir at Sigma Classes, Ranchi.
Ideal for Class XI, XII, and repeater students preparing for JEE & NEET.
Get personal attention, real classroom energy, and regular doubt-clearing.
Live Online Physics Classes
Join interactive classes with Saurabh Sir from anywhere in India.
Ideal for Class XI, XII, and repeater students preparing for JEE & NEET.
Live classes will take place between 7:30 PM and 9:00 PM, up to 3 times a week, with focus on
👉 Doubt-solving
👉 Real-time teaching
👉 Regular practice & discipline
Pre-recorded Topic-wise Lectures
Need help with a specific topic?
Buy pre-recorded lectures recorded by Saurabh Sir — ideal for Class XI, XII, and repeater students.
Each video comes with detailed explanations, visual methods, and doubt discussion support.
Offline Physics Classes in Ranchi
Join in-person classes with Saurabh Sir at Sigma Classes, Ranchi.
Ideal for Class XI, XII, and repeater students preparing for JEE & NEET.
Get personal attention, real classroom energy, and regular doubt-clearing.
Live Online Physics Classes
Join interactive classes with Saurabh Sir from anywhere in India.
Ideal for Class XI, XII, and repeater students preparing for JEE & NEET.
Live classes will take place between 7:30 PM and 9:00 PM, up to 3 times a week, with focus on
👉 Doubt-solving
👉 Real-time teaching
👉 Regular practice & discipline
Pre-recorded Topic-wise Lectures
Need help with a specific topic?
Buy pre-recorded lectures recorded by Saurabh Sir — ideal for Class XI, XII, and repeater students.
Each video comes with detailed explanations, visual methods, and doubt discussion support.
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Meet Saurabh Sir
Your Physics Mentor with 30+ Years of Proven Results
IIT DELHI | Physics Expert
Saurabh Sir is an IIT Delhi alumnus and ex-faculty at St. Xavier’s College, Ranchi. With over 33 years of teaching experience, he has mentored thousands of students for JEE, NEET, and Olympiads.Known for his deep clarity, real-life analogies, and unwavering commitment, Saurabh Sir focuses on concept-first learning, helping students not just crack exams but fall in love with Physics.
What Students Say About Saurabh Sir
✌️ “Greatest explainer ever. The course doesn’t just run through equations — Saurabh Sir gives deep intuition about concepts. Everything got covered.”
— Ritik Raj
💬 “All concepts are beautifully explained, and the last assignment questions were very well designed.”
— Jaydeep Meena
✌️ “Your teaching methods are on another level. They helped me understand concepts easily. It’s really helpful... Thank you so much!”
— Rahul Vishwakarma
⭐️ “Physics becomes easier and more interesting in your classes, Sir! ✌️”
— Sakshi Jaiswal
⭐️ “Physics was the toughest subject for me — but Saurabh Sir made it interesting and easy. Thanks to Sigma Classes, I scored 159/180 in NEET Physics (2018).”
— Akansha Priya, NEET 2018 ✌️”