NDA

The physics section of NDA exam carries 23-25 questions on general physics topics. The syllabus of NDA physics is vast. Candidates must focus on the important topics that carry the maximum weightage such as Ohm’s Law, Mass, Force, and Momentum. Candidates should not ignore other topics given in the syllabus. Some of the important topics includeProperties of Mass, Weight, Volume, and Sound wavesProperties and States of MatterHeat and its effectsBarometerRectilinear propagation of LightDensity and Specific GravityHuman EyeElectrical CircuitsSpherical mirrors and human eye lensesReflection and Refraction of LightVelocity/AccelerationMotion of objectsNatural and Artificial MagnetsArchimedes’ PrincipleProperties of a MagnetNewton’s Laws of MotionEarth as a MagnetForce and MomentumStatic and Current ElectricityParallelogram of ForcesOhm’s LawPower and EnergyPrimary and Secondary CellsUse of X-RaysElementary ideas of workMagnetic effects of CurrentGravitationConductors and Non-conductorsMeasurement of Temperature and HeatWorking of Simple Pendulum, Pulleys, Levers, Periscope, Siphon, Balloon, Pumps, Gramophone, Hydrometer, Pressure Cooker, Thermos Flask, Lightning Conductors, Telegraphs, Telephone, Telescope, Microscope, Mariner’s Compass, Safety Fuses.

One of the most coveted defence examinations in the nation, the NDA is used to choose applicants for admission to the Indian Naval Academy and National Defence Academy programmes. The exam is given twice a year to choose male and female applicants who meet the requirements. Approximately 2.5–3 Lacs applicants register for the exam each year, out of which 4-5 Lacs students actually take it. Out of all the students who take the exam, about 7-8 thousand pass. This indicates that just 2.5–3% of applicants receive invitations to move on to the SSB interview round. An SSB interview and a written exam make up the NDA exam selection process.

Start by thoroughly understanding the NDA exam syllabus and exam pattern.If available, identify the weightage for each subject (Mathematics, English, General Knowledge, and Science) to prioritize your study plan.Dedicate a fixed number of hours each day or week for studying different subjects.Break down your preparation into smaller, achievable goals with weekly or monthly targets for completing specific topics.NCERT Mathematics and Science textbooks (Class 11 & 12) form a strong foundation for these subjects.Revise all the topics you have studied periodically. This helps retain information and improve recall during the exam.Take short breaks to avoid burnout, but ensure you return to your studies feeling refreshed.

Here you can refer to the important topics for the Probability chapter in the NDA Maths paper:Basic Concepts of Probability:Definition of Probability (Classical and Statistical)Sample Space and EventsTypes of Events (Simple, Compound, Independent, Dependent, Exhaustive, Mutually Exclusive)Venn Diagrams (for representing events)Theorems of Probability:Addition Theorem for Disjoint EventsConditional Probability and Bayes' Theorem (simple problems)Random Variables and Probability Distributions (basic understanding):Definition of Random VariableTypes of Random Variables (Discrete & Continuous)Introduction to Probability Distributions (concept, not solving complex problems)Simple Problems on:Finding the probability of an event (using various methods)Applying theorems like Addition theorem and Bayes' theoremConditional probability 

The recommended readings for NDA Maths are listed below: RS Aggarwal's book Mathematics for NDA and NA: National Defence Academy and Naval Academy RS Aggarwal, Quantitative aptitude for competitive examinations. The following are some pointers and advice for writing an NDA maths paper: To comprehend the exam's format, familiarise yourself with the NDA exam pattern for the written exam. Applicants must thoroughly review the NDA syllabus. Applicants need to extensively review the math textbooks for Classes 10, 11, and 12. Keep a separate notepad for your formulas and quick calculating tips. To understand the kinds of questions asked, candidates should practise answering prior year's question papers.