The single authoritative preparation hub and command center for JEE Main 2026 engineering aspirants. Practice 2,640+ bilingual PCM questions across 66 chapters, compete in the Sunday All India Mega Mock Championship, test your speed in the NTA CBT Exam Engine, master 2021–2026 PYQs, predict your All India Rank & Percentile, and challenge your friends.
A uniform solid sphere of mass M and radius R rolls without slipping down an inclined plane of inclination θ. The linear acceleration of the center of mass of the sphere down the incline is:
For pure rolling (rolling without slipping) down an inclined plane of inclination θ, the linear acceleration of the center of mass is:
a = [g sin θ] / [1 + (Icm / MR2)]
For a solid sphere, the moment of inertia about its central axis is Icm = (2/5) MR2, so Icm / (MR2) = 2/5.
Substituting this value into the equation:
a = (g sin θ) / (1 + 2/5) = (g sin θ) / (7/5) = (5/7) g sin θ
Hence, Option (B) is the correct answer.
Every tool and resource below is 100% active, free to use, bilingual, and specifically engineered to solve core preparation bottlenecks for JEE Main 2026 engineering aspirants.
2,640+ authentic questions across Physics, Chemistry, and Mathematics. Instant 1-tap language switch between English and Hindi, KaTeX mathematical formulas, and step-by-step solutions.
Experience exact NTA exam pressure with thousands of serious aspirants across India. Full 3-hour, 75-question test with instant All India Rank (AIR), percentile projection, and national leaderboard standing.
The authentic examination console: interactive question palette, per-question Hindi/English switcher, Section A (MCQs) & Section B (Numericals), live timer, and keyboard shortcuts (A/B/C/D, Enter, C).
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10 fresh problems daily (4 Maths, 3 Physics, 3 Chemistry). Compete against thousands of engineering aspirants, track your consecutive day streak, and build exam speed.
Track all 11 deleted chapters (States of Matter, Solid State, Metallurgy, etc.), trimmed topics, and the critical JEE Main vs Advanced Conflict Matrix so you don't skip IIT topics.
Calibrated against 120+ NTA shifts. Filter 36 Tier-1 Do-or-Die chapters (245+ marks) across Math, Physics & Chemistry, unlock Math 60+ & Chem 80+ blueprints, and practice 2,640+ MCQs.
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Access original annual session shifts in CBT practice format and downloadable PDFs. Features step-by-step mathematical solutions, answer keys, and chapter-wise question breakdowns.
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TargetExams is actively building the most advanced technology infrastructure for national engineering entrance exams. Here is what is active and in development for the JEE 2026 cycle.
Authentic 75-question 3-hour NTA CBT simulation with Section A MCQs and Section B Numerical Value questions. Features live negative marking bleed analysis and instant All-India Rank projections.
Eliminate repeat mistakes and negative marking bleed with an intelligent mistake ledger, root-cause categorization (Conceptual vs Calculation vs NTA Traps), and 1-click Weakness Blitz CBT drills.
Comprehensive college cutoff explorer comparing closing ranks and percentiles across Home State and Other State quotas for 31 NITs, 26 IIITs, and top GFTIs with interactive percentile slider.
Curated 1-page formula summaries for Physics, Organic Chemistry named reaction maps, and Calculus / Coordinate Geometry formula sheets designed for rapid pre-exam revision.
10 fresh bilingual exam-standard questions every morning with a 10-minute timer countdown, instant score card, and streak tracker to build daily discipline.
Advanced multi-concept linking problems that bridge standard JEE Main questions into JEE Advanced multi-correct, integer-type, and matrix-match problem sets.
Engineered to give you zero exam-day anxiety by matching the actual National Testing Agency interface.
Move the slider to your expected marks (out of 300) to see your projected NTA Percentile, predicted All India Rank, and qualifying college tier.
Verified against the official National Testing Agency (NTA) 2026 Information Bulletin for Paper 1 (B.E. / B.Tech).
Achieving a 99+ percentile in JEE Main requires moving beyond random question solving into a deliberate, closed-loop mastery workflow.
Build core conceptual foundations from NCERT and textbook theory before attempting speed drills.
Condense physical laws, calculus identities, and organic reaction mechanisms into rapid revision sheets.
Attempt 10-to-15 question timed sets under JEE Main (+4/−1) conditions to test immediate retention.
Review every incorrect answer, calculation slip, and sign error in your personal mistake notebook.
Use AI Study Friend to reteach stumbling blocks and generate targeted recovery quizzes.
Choose a subject or filter by topic. Each chapter features dedicated study material, key formulas, solved examples, and timed CBT practice sets.
Tailor your revision style to the specific problem-solving demands of Physics, Chemistry, and Mathematics.
Preparing for JEE does not mean studying in isolation. The TargetExams AI Study Friend acts as your 24/7 personal tutor — breaking down dense formulas, identifying weak chapters, and guiding step-by-step problem solving.
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Stuck on a challenging numerical? Instead of spoon-feeding the final answer, AI Study Friend provides progressive hints to teach the derivation.
Connects with your test attempts to pinpoint concepts where accuracy drops below 60% (e.g. Definite Integrals or Ionic Equilibrium).
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A structured, expert-backed strategy covering Class 11 and 12 timelines, NCERT mastery, daily question routines, and error analysis.
The Joint Entrance Examination (Main), conducted by the National Testing Agency (NTA), is India's premier gateway for admission into National Institutes of Technology (NITs), Indian Institutes of Information Technology (IIITs), and Government Funded Technical Institutes (GFTIs), as well as the eligibility filter for JEE Advanced. Scoring in the top 99th percentile requires a disciplined blend of fundamental clarity, systematic testing, and rigorous error auditing.
Early preparation during Class 11 should center on conceptual depth. Topics such as Newtonian Mechanics, Thermodynamics, General Organic Chemistry (GOC), and Coordinate Geometry form the mathematical and physical spine of subsequent chapters. Students in Class 12 must balance board examination descriptive requirements with JEE objective testing. A 70:30 time split between Class 12 topics and Class 11 revision from July onwards ensures students do not forget foundational mechanics and stoichiometry when exam season arrives.
A common mistake among engineering aspirants is abandoning NCERT textbooks in pursuit of voluminous reference guides. For Chemistry, NCERT is effectively the syllabus syllabus: virtually all Inorganic Chemistry questions and most Organic reaction mechanisms directly mirror NCERT statements and tables. In Physics and Mathematics, NCERT builds core definitions and basic problem-solving routines, after which students must transition to TargetExams chapter-wise tests and past year papers for speed training.
Physics tests your ability to translate written problem scenarios into mathematical equations. Avoid rote formula memorization. Instead, focus on free-body diagrams in Mechanics, field-line geometry in Electrostatics, and ray optics sign conventions. Always test limiting conditions (e.g., what happens when mass becomes zero or angle approaches 90 degrees) to verify formula derivations.
Divide Chemistry into three distinct disciplines:
JEE Main Mathematics has historically been the most time-consuming section. Developing rapid algebraic manipulation skills is essential. Topics like Vectors, 3D Geometry, Matrices, and Differential Equations offer standard solution templates with predictable marks. In Calculus, practice visualizing graph transformations to determine continuity and bounded areas without lengthy integration steps.
Aim for 40 to 60 quality questions daily (approximately 15–20 per subject) under timed conditions rather than skimming 200 questions passively. Maintain an Error Notebook containing three columns: What I Did Wrong, Why I Made the Mistake (Conceptual, Calculation, or Misread Question), and Correct Working. Reviewing this notebook every Sunday prevents recurring point loss in future mock attempts.
Starting three months before your examination session, simulate full 3-hour CBT mock examinations once or twice a week. Sit during official exam shifts (9:00 AM – 12:00 PM or 3:00 PM – 6:00 PM) to adapt your biological clock. Spend at least two hours analyzing each mock test: identify time spent on unanswered questions and assess whether your question selection strategy maximized your marks-per-minute ratio.
Common queries regarding JEE Main 2026 preparation, syllabus coverage, testing features, and scoring.
The TargetExams JEE Main Preparation Hub is a complete, free study and practice ecosystem for JEE Main aspirants. It brings together chapter-wise CBT practice tests across Physics, Chemistry, and Mathematics, verified Previous Year Question Papers (2021–2026) with CBT practice, official NTA exam pattern analysis, formula revision sheets, and an AI Study Friend for personalized doubt resolution and performance diagnostics.
As per the official NTA Information Bulletin, JEE Main Paper 1 (B.E./B.Tech) comprises 75 questions to be answered in 3 hours (180 minutes) worth a total of 300 marks. Each of the three subjects (Physics, Chemistry, and Mathematics) contains Section A (20 compulsory MCQs) and Section B (Numerical Value questions where students attempt 5 out of 10). Both sections follow the +4 for correct, -1 for incorrect, and 0 for unattempted marking scheme.
Chapter-wise tests are focused 10-to-15 question practice sets designed to help students master specific concepts, standard formulas, and numerical applications chapter-by-chapter. Full-length CBT mock tests replicate the complete 3-hour, 75-question examination environment to build endurance, speed, time management, and subject-switching agility.
Yes. All 66 chapter-wise practice tests, previous-year question papers, and revision guides on TargetExams are 100% free. A quick free account registration allows you to record your test history, track accuracy analytics, and reattempt sets anytime.
PYQs are the gold standard for JEE preparation. We recommend attempting chapter-wise PYQs right after finishing a topic to understand examination trends, and then solving complete 3-hour annual papers (2021–2026) in CBT mode during the final 3 months before your exam session to build real exam temperament.
AI Study Friend is an intelligent learning companion integrated into TargetExams. It helps students break down difficult derivations, explains step-by-step problem solutions, detects weak chapters from your test attempts, and generates custom adaptive quizzes focusing on your exact mistake patterns.
With a -1 penalty for incorrect answers, blind guessing drastically damages your percentile. On TargetExams tests, we encourage intelligent elimination: only attempt questions where you can eliminate at least two options, and maintain a mistake analysis log after every attempt.
Access all 66 chapters, verified PYQ test series, NTA-style CBT practice sets, and AI-assisted performance diagnostics with a free TargetExams account.
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