The Thrill of Physics
Fun, challenging, and unforgettable physics problems — with carefully worked solutions to the legendary Pathfinder, chapter by chapter. Every problem solved in full, often by more than one method.
16
Chapters of Pathfinder, fully covered
1,300+
Worked solutions — and growing
100%
Free to use, no sign-up needed
Explore the chapters
From kinematics to modern physics — pick a chapter and start solving.
Thermal, Matter & Modern
Waves & Optics
Electromagnetism
About this site
Physics.lt is a space for students who love to be challenged. Every solution here is written out in full — often with more than one method — so you can compare your reasoning, not just your answer.
I am deeply grateful to my friend and colleague, Sayan Chatterjee. I was fortunate to have him by my side from the very beginning of my teaching career. Our many stimulating discussions, debates, and even disagreements played a crucial role in nurturing a deep passion and interest for the subject. He has also provided invaluable help with the verification and analysis of solutions for this site.