92% of JEE Main 2026 questions fell in topics we predicted

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Inline-four piston engine illustrating rotational and reciprocating motion
Open piston mesh · Dape13 · CC BY-SA 4.0
JEE Advanced 2024 · Physics Step-by-step

A non-conducting ring of mass m and radius R has a uniform charge q. Find the angular acceleration when a magnetic field B is switched on.

ANSWER
α = qB / 2m
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Built from 20+ years of papers and reviewed by IITian faculty. In JEE Main 2026, our predictions covered 92% of tested topics.

0%
Topic coverage · JEE 2026
0
Near-identical questions
Faculty
Verified by IITians

Topic coverage and near-identical matches are separate measures. JEEnius predicts patterns, not the exact paper, and is not affiliated with NTA.

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JEE Main 2027 · Physics • EMI AI + faculty

A non-conducting ring of mass m and radius R carries a uniform linear charge density λ and rests on a rough surface (friction μ). A magnetic field B(t) = B₀ + αt², confined to a circular region of radius r (r < R) concentric with the ring, is switched on. Find the time t at which the ring just starts to rotate.

94% match likelihood

Real predicted question · one of 1,500+ for JEE Main 2027.

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Optical bench with a convex lens, triangular prism and projected visible spectrum
Interactive physics · Ray optics

Follow light from lens to spectrum

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COMPONENTConvex lens
RELATION1/f = 1/v − 1/u
OBSERVEBeam becomes nearly parallel

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JEE Main · Physics
1 / 4

A ball is thrown at 20 m/s at 30° above the horizontal. What is its maximum height? (g = 10 m/s²)

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Change the magnetic field and see how the induced electric field spins the ring. Build intuition before memorising the formula.

α = q2m · dBdt = 0.00 rad/s²
Angular acceleration - spikes while you drag.
ω = qB2m = 0.30 rad/s
B 0.60 TdB/dt 0.00 T/s
B ⊙ field out of screen · drag the slider
JEE Main - Full Mock 02:14:08
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JEEnius AI is an AI-powered platform built specifically for JEE Main and JEE Advanced. You get 20+ years of PYQs (Main 2002-2025, Advanced 2007-2025), AI-predicted mock tests, chapter- and topic-wise practice across Physics, Chemistry and Mathematics, and a 24×7 AI doubt solver.
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We measure two separate things. (1) Topic coverage - 92% of JEE Main 2026's 1,284 questions fell in topics we predicted (Physics 97%, Chemistry 94%, Mathematics 83%). (2) Near-identical matches - 218 of our questions closely matched real ones by concept and method, verified with production-grade embedding similarity. JEEnius predicts topic areas and question patterns, not the exact paper, and is not affiliated with NTA or any exam body.
Absolutely. The platform is continuously updated. JEE Main 2027 and JEE Advanced 2027 aspirants get the full PYQ archive, mock tests calibrated to the latest paper pattern, and an AI tutor that adapts to your weak areas.
Yes. Full-length JEE Main and Advanced mock tests generated by the prediction engine, plus chapter- and topic-wise practice across Physics, Chemistry and Mathematics, with instant performance analytics.
Unlike basic bots that give generic answers instantly, JEEnius AI 'thinks' through the problem using reasoning models (o-series and Fathom AI) so the solution is accurate and easy to understand. Quality takes a few seconds.
Yes. The engine includes Fathom AI - famous for a perfect score on JEE Advanced 2025 - and is fine-tuned for high-level, multi-concept JEE Advanced problems.
Absolutely. JEEnius AI complements any coaching. The AI detects your weak areas from practice and adapts to fill gaps your coaching schedule may leave.
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