JEE FAQ

JEE Main comprises 300 marks across 75 questions divided equally among Physics (25 questions, 100 marks), Chemistry (25 questions, 100 marks), and Mathematics (25 questions, 100 marks).

Each subject contains Section A with 20 Multiple Choice Questions (single correct option) and Section B with 5 Numerical Value Type questions where candidates enter a non-negative or signed numerical value.

Both Section A and Section B follow +4 marks for a correct answer and -1 mark penalty for an incorrect answer. Unanswered questions receive 0 marks.

ThunderTest hosts 50+ full-length CBT mock tests (from jee-full1.html to jee-full50.html) alongside 30 comprehensive subject tests (jee1.html to jee30.html).

The full-length mock test has an authentic 3-hour (180-minute) countdown clock with automatic submission upon timer expiration.

Yes, numerical questions accept answers rounded to the nearest integer or specified decimal places, strictly reflecting NTA evaluation guidelines.

NTA converts raw scores into a Percentile Score from 100 to 0 using the formula: (100 * Number of candidates with raw score equal to or less than candidate) / (Total candidates in that shift).

Candidates must score at least 75% aggregate marks in Class 12 board examinations (65% for SC/ST candidates) or rank within the top 20 percentile of their respective qualifying board.

Yes, students can appear in both sessions. The best of the two NTA percentile scores is utilized for ranking and JoSAA counseling allocation.

The top 2,50,000 successful candidates (across all categories) in JEE Main Paper 1 become eligible to register for JEE Advanced.

Yes, comprehensive text explanations, alternative shortcut methods, and NCERT/standard textbook citations are provided in the post-test analytics review.

Yes, ThunderTest offers dedicated Class 11 and Class 12 chapter-wise tests across Physics, Chemistry, and Mathematics.

In accordance with official JEE Main guidelines, on-screen calculators are NOT permitted in JEE Main. Students must practice high-speed mental arithmetic and rough-sheet calculations.

Green indicates Answered, Red indicates Not Answered, Purple indicates Marked for Review, and Grey indicates Not Visited.

Yes, official NTA shift papers from 2019 through 2025 are available in interactive CBT mode under the PYQs hub.

Yes, all mock tests have unlimited reattempts so you can practice after revising weak areas.

The analytics engine calculates your estimated All India Rank (AIR), subject-wise accuracy, and percentile rank based on a vast database of student attempts.

Paper 1 is for B.E./B.Tech admissions (PCM). Paper 2A is for B.Arch (Mathematics, Aptitude, Drawing), and Paper 2B is for B.Planning (Mathematics, Aptitude, Planning).

Yes, click 'Clear Response' to deselect an answered option without marking any alternative.

Yes, you can toggle freely between subject tabs at any point during the 180-minute examination.

Calculus (Limits, Continuity, Differentiability, Application of Derivatives, Definite & Indefinite Integrals, Differential Equations, Area under Curves) contributes roughly 35-40% of the math paper.

Vectors and 3D Geometry account for 3 to 4 direct questions per shift. Formulas for shortest distance between skew lines, plane intersections, and scalar triple products are highly repetitive.

Applying King's rule (integral from a to b of f(x)dx = integral from a to b of f(a+b-x)dx) simplifies over 60% of complex trigonometric and logarithmic definite integrals.

Tangents and normals to parabolas (y^2 = 4ax), eccentricities of ellipses and hyperbolas, director circles, and focal chords appear in 3 to 4 questions per paper.

Practice properties of adjoint matrices (adj(AB) = adj(B)*adj(A), |adj(A)| = |A|^(n-1)), Cayley-Hamilton theorem, and Cramer's rule for non-trivial solutions.

Conditional probability, Bayes' theorem, Total Probability, Binomial distributions, and expectation calculations in games of chance.

Identify homogeneous equations, variable separable forms, and first-order linear differential equations requiring integrating factors (I.F. = e^(integral P dx)).

Sum of n terms of AP/GP, Arithmetico-Geometric Progression (AGP), AM >= GM >= HM inequality applications for finding minimum values, and telescopic series.

Represent complex numbers as 2D vectors: interpret |z - z1| = |z - z2| as perpendicular bisectors, |z - z0| = r as circles, and use De Moivre's theorem for cube roots of unity (1, omega, omega^2).

The general term is T(r+1) = nCr * x^(n-r) * y^r. Practice finding terms independent of x and greatest binomial coefficients.

Our analytics engine flags math questions where you exceeded 3.5 minutes, showing alternative elimination tricks and graphical shortcuts in the solution review.

Transformations (2 sin A cos B), multiple angle formulas (cos 2theta, tan 3theta), and standard solutions to sin theta = sin alpha.

Set up the single-variable function, compute f'(x) = 0 for critical points, and verify f''(x) < 0 for maximum or f''(x) > 0 for minimum.

They verify the existence of roots and stationary points where f'(c) equals the average rate of change on a closed continuous interval.

For 0/0 and infinity/infinity indeterminate forms, differentiate numerator and denominator independently or substitute Taylor series expansions of sin x, cos x, e^x, and ln(1+x).

Choose strips along the axis that requires fewer sub-region splits, and remember Archimedes' shortcut for parabola-line area: Area = (2/3) * base * height.

Fundamental principle of counting, circular permutations, distribution of identical objects into distinct boxes (stars and bars formula: (n+r-1)C(r-1)), and derangements.

Target high-accuracy, formula-driven chapters first: Vectors, 3D Geometry, Matrices & Determinants, Differential Equations, and Statistics before attempting lengthy integration.

Mathematical reasoning has been rationalized by NTA. Statistics (variance and standard deviation calculations) remains an active, high-yield topic.

Always check principal value branches (e.g. arcsin in [-pi/2, pi/2], arccos in [0, pi]) to eliminate extraneous roots.

Most toppers attempt Chemistry first (35-40 min), followed by Physics (50-55 min), leaving 80-90 minutes for intensive Mathematics problem solving.

Section B numerical questions do not have options to guide you. Double-check your final arithmetic before typing your integer response into the virtual keypad.

Because JEE Math is traditionally rigorous, scoring 48 to 55 marks out of 100 often secures a 99+ percentile in Mathematics.

Yes, comprehensive quizzes on Straight Lines, Circles, Parabola, Ellipse, and Hyperbola are indexed under Class 11 Math tests.

Access the formula sheet directly from the ThunderTest Mathematics hub.

JEE Physics requires multi-concept integration (e.g. combining conservation of angular momentum with magnetic torque) rather than rote statement derivations.

Use the parallel axis theorem (I = Icm + Md^2) and perpendicular axis theorem (Iz = Ix + Iy for laminar bodies) or integrate using elemental mass dm.

The point of contact must be instantaneously at rest (v_cm = omega * R and a_cm = alpha * R). Friction does zero net work during pure rolling on stationary surfaces.

Integrate dV = (1 / 4*pi*epsilon_0) * (dq / r) over the geometry, taking advantage of azimuthal and axial symmetry.

Energy density u = (1/2) * epsilon_0 * E^2 + (B^2 / (2 * mu_0)), where electric and magnetic field energy contributions are equal in an EM wave.

Choose a reference node as 0V, apply Kirchhoff's Current Law (sum of currents leaving node = 0) at all independent nodes, and solve linear equations for node voltages.

Inside an ideal solenoid B = mu_0 * n * I. Inside a toroid B = (mu_0 * N * I) / (2 * pi * r).

Apply Maxwell-Faraday equation: line integral of E.dl = - d(Phi_B)/dt. Induced electric fields are non-conservative with closed electric field lines.

Q = (omega_0 * L) / R = (1 / R) * sqrt(L / C). A higher Q-factor indicates sharp resonance and minimal energy dissipation.

Fringe shift Delta y = ((mu - 1) * t * D) / d, where mu is refractive index and t is film thickness.