Complete Guide to NDA 2026 physics weightage topics 2026

The Physics section in the NDA exam carries 100 marks, comprising 25 questions. Optics, Mechanics, and Current Electricity consistently dominate the paper, accounting for approximately 60% of the total weightage. Mastering these high-yield topics, along with consistent revision of NCERT concepts, is essential for securing a top rank in 2026.\n\n## What is the Exam?\n\nThe National Defence Academy (NDA) examination, conducted by the Union Public Service Commission (UPSC), is the gateway to commissioning into the Indian Army, Navy, and Air Force. It is a highly competitive, national-level entrance exam that assesses candidates on their mathematical ability, general awareness, and command over subjects taught at the 10+2 level. We at Exam Bhai view the NDA exam not merely as a test of knowledge, but as an assessment of a candidate’s analytical precision and strategic decision-making under time constraints.\n\n## Key Highlights 2026\n\n* Exam Mode: Offline (Pen and Paper).\n* Subjects: Mathematics and General Ability Test (GAT).\n* Physics Weightage: Part of the GAT paper (Physics contributes 100 marks).\n* Question Type: Objective (Multiple Choice Questions).\n* Marking Scheme: $+4$ for correct answers; $-1.33$ for incorrect answers.\n* Medium: Bilingual (English and Hindi).\n\n## Syllabus 2026\n\nThe Physics portion of the GAT paper requires a deep understanding of core scientific principles. Based on historical data, here is the expected distribution of topics for 2026:\n\n| Unit | Weightage (Approx) | Key Focus Areas |\n| :--- | :--- | :--- |\n| Optics | 20-25% | Reflection, Refraction, Lenses, Human Eye |\n| Mechanics | 20-22% | Laws of Motion, Work, Energy, Power, Gravitation |\n| Current Electricity | 15-18% | Ohms Law, Circuits, Resistance, EMF |\n| Thermodynamics | 10-12% | Heat Transfer, Laws of Thermodynamics |\n| Properties of Matter | 8-10% | Elasticity, Viscosity, Surface Tension |\n| Waves & Sound | 8-10% | Wave Motion, Doppler Effect, Simple Harmonic Motion |\n| Modern Physics | 5-7% | Atoms, Nuclei, Photoelectric Effect |\n\n## Exam Pattern\n\nThe General Ability Test (GAT) paper is divided into two parts: English and General Knowledge. Physics falls under Section B of the General Knowledge component.\n\n| Subject | Max Marks | Questions |\n| :--- | :--- | :--- |\n| English | 200 | 50 |\n| Physics | 100 | 25 |\n| Chemistry | 60 | 15 |\n| General Science | 40 | 10 |\n| History & Geography | 80 | 20 |\n| Current Affairs | 20 | 10 |\n\nTo bridge the gap between theory and execution, candidates must practice free mock tests for Defence on Exam Bhai to gain familiarity with the pressure of the examination hall.\n\n## Eligibility Criteria\n\nAs per the official guidelines published on upsc.gov.in, candidates must meet the following criteria:\n* Educational Qualification: 10+2 pattern of school education or equivalent with Physics and Mathematics (for Air Force and Navy wings).\n* Age Limit: Candidates must be between 16.5 and 19.5 years of age.\n* Nationality: Citizen of India, subject of Nepal, or a Tibetan refugee who came to India before 1962.\n\n## Application Process\n\nThe application process for NDA 2026 is conducted entirely online. Candidates must register on the UPSC portal, fill out the application form, upload scanned documents, and pay the examination fee. We advise students to keep their Aadhar card and academic records handy during the registration process.\n\n## Preparation Strategy\n\nPhysics in NDA is conceptual. Mere rote learning will not suffice. Our experts recommend the following roadmap:\n1. NCERT Foundation: Complete your NCERT Physics textbooks from Class 9 to 12. Most questions are rooted in these fundamental texts.\n2. Focus on Optics: Spend extra time on optical instruments and the physics of the human eye. \n3. Numerical Practice: Practice simple numerical problems involving $F=ma$, $W=Fd \cos \theta$, and $V=IR$. \n4. Mock Integration: You should regularly practice high-yield physics quizzes for Defence on Exam Bhai to identify your weak spots.\n5. Previous Year Analysis: Analyze at least 10 years of past papers to identify recurring themes.\n\nDon't let your preparation remain theoretical; take full-length simulated mock tests for Defence on Exam Bhai to refine your time management skills.\n\n## Cut-Off Trends\n\nCut-offs are determined by the difficulty level and the number of vacancies. As per data provided by upsc.gov.in, the qualifying marks for the written examination typically hover between 300 to 360 marks out of 900. Scoring at least 60-70 marks in Physics can significantly boost your overall score, providing a safety net for other sections.\n\n## Frequently Asked Questions\n\nQ1: Is Class 12 Physics sufficient for the NDA exam?\nA1: While Class 12 topics are included, about 30% of the questions are based on Class 9 and 10 levels. A comprehensive review of both levels is necessary.\n\nQ2: Are calculators allowed in the NDA exam?\nA2: No, the use of calculators or any electronic device is strictly prohibited inside the examination hall.\n\nQ3: Does the Physics section have a sectional cut-off?\nA3: UPSC maintains a minimum qualifying standard for the overall paper, but there is no explicit sectional cut-off for the Physics component alone.\n\nQ4: Which chapters should I prioritize for quick marks?\nA4: Optics, Current Electricity, and Laws of Motion are the highest-yielding topics and should be your primary focus.\n\nQ5: How many questions are asked from Modern Physics?\nA5: Generally, 2 to 3 questions are asked from Modern Physics, focusing on basic concepts like radioactive decay or atomic structure.\n\nQ6: What is the best way to revise for Physics?\nA6: Create a formula sheet for each chapter and solve at least 20-30 MCQs daily from a reliable question bank to build speed and accuracy.