Modern Physics & Optics for JEE

The chapter where the sign convention decides whether your answer is right or upside-down.

Where light stops being a ray and starts behaving like a wave — and JEE tests both.

The chapter that killed classical physics and won Einstein a Nobel Prize.

The Physics view of atoms — Bohr's semi-classical model and the hydrogen spectrum.

Where mass becomes energy — and half-life becomes a formula you can trust.

The chapter that hides behind every modern electronic device — and shows up as a direct-recall JEE question.