TN Defence Academy® — A Unit of TN Academy®
14+ Years Trusted Education Legacy Since 14 March 2013
NDA Defence Coaching & Preparation for Students from Bahadurgarh, Delhi NCR & Nearby Areas
Call: 9729299034
Email: tnacademyenquiry@gmail.com
NDA preparation requires consistent study, practice, testing and revision. TN Defence Academy® provides a structured classroom-based preparation environment for students preparing for the NDA pathway.
Understand the student's class → Identify the target attempt → Select the right program → Build concepts → Practise → Test → Analyse → Improve
TN Academy® — 14+ Years Trusted Education Legacy Since 14 March 2013
The NDA Defence vertical is a new specialised NDA coaching program supported by TN Academy®'s established educational infrastructure and classroom systems.
Choose the Program According to Your Class & NDA Target
For Class 11 Students Targeting NDA After Class 12
A long-term preparation pathway allowing students to progressively cover, practise and revise the NDA syllabus during Class 11 and Class 12.
For Students Seeking Focused NDA Preparation Within One Academic Year
A structured one-year preparation program covering the major NDA written-examination areas with practice, testing and revision.
Focused Preparation for Students Requiring a Shorter Examination-Oriented Cycle
Schedule may vary according to the examination calendar and student's preparation level.
For students who want to manage school academics and NDA preparation together.
Class 9 and Class 10 students are not treated as NDA written-examination students at this stage.
The Officer Development Program focuses on building the academic, communication, leadership and personality foundation before higher-secondary NDA preparation.
A longer foundation pathway can continue across Class 9 and Class 10.
A focused one-year program can strengthen the student's academic and competitive foundation before Class 11.
Optional school Mathematics & Science tuition support can be added.
Class 9 and Class 10 students may study together in the same classroom under the common Officer Development framework with appropriate academic support.
Learn → Practice → Test → Analyse → Correct → Re-practice → Mock → Improve
Study Material | Practice Sheets | Regular Tests | Revision Support | Faculty Guidance
What is the value of log10(1) + log10(10) + log10(100)?
(A) 2 (B) 3 (C) 1 (D) 0
Correct Answer: (B) 3
Explanation: log10(1) is 0, log10(10) is 1, and log10(100) is 2. Adding them together: 0 + 1 + 2 = 3.
Concept: Standard logarithmic base-10 values and power rule: log10(10^n) = n.
Common Mistake: Confusing log10(1) with 1 or attempting multiplication instead of addition.
Short Method: Read directly by powers of ten: 0 + 1 + 2 = 3 (solvable in under 5 seconds).
What is the derivative of sin(2x) with respect to x?
(A) cos(2x) (B) -2cos(2x) (C) 2cos(2x) (D) 2sin(2x)
Correct Answer: (C) 2cos(2x)
Explanation: Derivative of sin(u) is cos(u) multiplied by the derivative of u. Here u = 2x, whose derivative is 2.
Concept: Chain rule of differentiation for trigonometric functions.
Common Mistake: Forgetting to differentiate the inner linear function 2x, mistakenly choosing cos(2x).
Short Method: Standard formula: d/dx [sin(ax)] = a * cos(ax). Put a = 2 directly.
Which mirror is primarily used as a rear-view mirror in vehicles?
(A) Concave mirror (B) Convex mirror (C) Plane mirror (D) Cylindrical mirror
Correct Answer: (B) Convex mirror
Explanation: A convex mirror always forms an erect, diminished image and offers a much wider field of view behind the driver.
Concept: Ray optics, reflection at curved surfaces and field of view.
Common Mistake: Confusing convex with concave (concave is used in headlights and dental mirrors, not rear-view).
Short Method: Wider rear field needed = Always curved outwards (Convex).
NDA Mathematics Specialist
M.Sc. Mathematics | B.Ed. | CTET Qualified | HTET Qualified
5+ Years Teaching Experience
Focus: NDA Mathematics, objective practice and problem-solving.
Founder • Director • CEO
M.Sc. Mathematics | B.Ed. | CTET Qualified | HTET Qualified | LL.B.
14+ Years Teaching Experience
Mathematics educator, career mentor and author/contributor to Mathematics and Reasoning study material.
M.Sc. Biology | B.Ed. | CTET Qualified | HTET Qualified | PGT
14+ Years Teaching Experience
Focus: Science preparation and academic support relevant to NDA/GAT.
Physics Faculty
M.Sc. Physics | B.Ed.
12+ Years Teaching Experience
Focus: Physics and Science preparation.
GAT / General Studies Faculty
M.A. History | B.Ed. | CTET Qualified | HTET Qualified | UGC-NET/JRF Qualified
15+ Years Teaching Experience
Focus: History, Geography, Polity, General Studies and Current Affairs relevant to NDA GAT.
English Faculty
M.A. English | MBA | B.Ed.
15+ Years Teaching Experience
Focus: English Grammar and Vocabulary.
Reasoning / Aptitude Support Faculty
11+ Years Teaching Experience
Psychology • Interview • Leadership & Personality Development Mentor
M.A. Psychology | M.Phil. | Ph.D. | LL.B. | LL.M.
25+ Years Interview & Training Experience
Focus: Psychology | Interview Training | Leadership Development | Communication | Personality Development | Interview-Oriented Guidance
Important: Do not present Reasoning as an official NDA written-examination paper. UPSC's NDA written scheme consists of Mathematics and General Ability Test (GAT). Reasoning-related aptitude may be presented only as supplementary academic/competitive skill development if actually taught. Special personality-development and leadership sessions may be conducted according to the program schedule.
TN Defence Academy® is located on Delhi–Rohtak Road, Bahadurgarh.
For suitable students from nearby Delhi NCR areas, Bahadurgarh can be a practical alternative to travelling farther into Delhi every day.
Daily Travel + Class Time + Study Environment + Faculty + Practice + Academic Support
Local Search Focus:
Bahadurgarh | West Delhi | Nangloi | Najafgarh | Uttam Nagar | Janakpuri | Nearby Delhi NCR
The suitability of the location depends on the student's home address, transport availability and daily travel time.
TN Defence Academy® does not operate its own hostel or PG.
Nearby independent PG/accommodation options may be available. Students can arrange accommodation according to their own requirements.
Important: UPSC examination-calendar dates are liable to alteration. Candidates should check the latest official UPSC notification before applying. UPSC's official website publishes the examination calendar and NDA examination notifications.
Mathematics — 300 Marks
General Ability Test — 600 Marks
Total Written Examination — 900 Marks
The official NDA scheme identifies Mathematics and GAT as the written papers.
Written Examination → SSB → Medical → Final Merit → Training
START NDA 2027 PREPARATION
— Tarun Dhankar
Founder • Director • CEO
TN Academy®
Since 14 March 2013
Education Legacy
Students Guided
Campus
Selections Across Different Government Examinations
Important: These figures refer to the overall TN Academy® education ecosystem and are not NDA-specific selection claims.