About PadhaiLens

One educator, a spreadsheet of 1,690 exam questions, and a simple belief: students deserve to see the exam clearly before they start preparing for it.

The founder

PadhaiLens is built by Rabindra Kumar Choudhary (Ravi) — a physics educator, author of two books, and the analyst behind the 43-paper CBSE study this site is built on.

Years of teaching showed the same problem on repeat: sincere students spending months on low-yield chapters because nobody showed them the paper's actual pattern. PadhaiLens exists to fix that — with data anyone can verify, given away free.

Physics is the starting point, not the boundary. As the analysis pipeline matures, chemistry, mathematics and biology will follow — each built the same way.

The principles

Papers first, opinions second

Every claim on this site traces back to a classified question in a real paper.

Expectation, never prediction

We measure what exams have asked. We never sell "guaranteed questions" — no one honest can.

Free at the core

Notes, PYQs and the tier map stay free. Depth — books and advanced material — is what's paid.