# Jee Advanced Physics Solver > Solve JEE Advanced physics problems — multi-concept, multi-correct, integer-type, matrix-match — from photos, screenshots, text, or WhatsApp forwards. The skill searches the internet for existing solutions (FIITJEE, Allen, Resonance, Brilliant, JEE Advanced official keys), independently derives symbolically, verifies with Python/SymPy, cross-checks against internet consensus, and iterates up to three times — essential for Advanced where one missed case in multi-correct zeroes the mark. Stages a WhatsApp-ready reply with full derivation for teacher approval. Trigger whenever the user shares a JEE Advanced physics problem OR mentions JEE Advanced, JEE Adv, IIT advanced, Paper 1, Paper 2, matrix match, multi-correct, integer type. Also trigger on problems with multi-concept coupling (mechanics + thermo, optics + EM), non-trivial calculus, tricky limits, or four options where multiple may be correct. - Skill: `physics4noobs/jee-advanced-physics-solver` (Agent Skill, multi-file: 6 files) - Install (CLI): `npx skillmds@latest add physics4noobs/jee-advanced-physics-solver` - Raw SKILL.md: https://api.skillmd.com/api/skills/physics4noobs/jee-advanced-physics-solver/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: physics4noobs (https://skillmd.com/u/physics4noobs) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/physics4noobs/jee-advanced-physics-solver --- # JEE Advanced Physics Solver A verified-against-internet solver tuned for JEE Advanced's higher rigor and stricter marking. Advanced punishes sloppiness more than Main — one wrong selection in a multi-correct MCQ can zero the whole question — so the verification loop is not optional, it's the whole value of the skill. ## JEE Advanced context (for tuning answers) - **Paper format**: two 3-hour papers. Each has ~18 physics questions. Mixed question types: - **Single-correct MCQ** (4 options, one right): +3 / −1. - **Multi-correct MCQ** (4 options, one or more right): +4 for fully correct, partial credit (+1 per correct if no wrong), −2 for any wrong. - **Integer/numerical answer** (two decimal or integer): +3/+4, 0. - **Matrix match / paragraph / comprehension**: shorter clusters with shared stems. - **Time pressure**: slower than Main — 5–8 min per hard problem is reasonable. - **Syllabus**: NCERT-based but with deeper treatment. Expect: - Multi-concept problems (mechanics + thermodynamics; optics + interference; EM + modern). - Calculus at JEE-level rigor (but not beyond — no contour integrals). - Limiting cases, dimensional analysis as a check, and sometimes "select all that apply" where you must prove each. - Exact symbolic answers are common (e.g., "express in terms of m, g, L" rather than "give a number"). - **Default constants**: g = 10 unless specified, π = 3.14, c = 3×10⁸ m/s, ε₀ = 8.85×10⁻¹², h = 6.63×10⁻³⁴ J·s. ## The workflow All seven steps, in order. For multi-correct questions, steps 4–5 must evaluate *every* option independently. ### 0. Make sure WebSearch is loaded Before step 1, check whether the `WebSearch` tool is available. If it isn't in your current tool list, load it via `ToolSearch` with `{"query": "select:WebSearch,WebFetch", "max_results": 2}`. The internet cross-check in step 3 is especially important for JEE Advanced because of the official-key weighting and multi-correct traps — if WebSearch genuinely cannot be loaded, continue without it but flag explicitly in the draft that the internet cross-verification was unavailable. ### 1. Extract the problem cleanly - Transcribe the full problem including diagrams described in words. Advanced problems often have subtle setups (wedge on a wedge, two pulleys with different masses) — draw the figure out in words in your reasoning. - Echo the restatement and name the question type explicitly (single-correct / multi-correct / integer / matrix). - For multi-correct: list all four options verbatim — you'll evaluate each. ### 2. Classify and identify coupling Name the topic(s). Advanced commonly couples two areas in one question — identify them both. Examples: - "Block on rotating turntable with friction" → rotation + friction + circular motion. - "Gas in a cylinder undergoing two processes" → thermodynamics + kinematics (if piston moves). - "Charged particle in a magnetic field with gravity" → EM + projectile. Flag all conservation laws available (energy, momentum, angular momentum, charge) — they are Advanced's favorite shortcuts. ### 3. Internet search for existing solutions Search patterns that work well for Advanced problems: - `"[first 15 distinctive words]" JEE Advanced solution` - `JEE Advanced [year] Paper [1/2] Q[number] solution` - `[topic] [key numbers or setup] JEE Advanced answer key` - `IIT JEE Advanced [year] physics [topic] solution` For problems that have appeared in past papers, the **official answer key** (NTA / JEE Advanced official site) is the highest-trust source — weigh it above coaching sites. For multi-correct, coaching sites sometimes disagree on which options are correct; the official key settles it. Capture: - All four option labels (for multi-correct, note which are marked correct in the key). - The method — Advanced solutions often reveal a clever approach you'd miss. - Sources that agree vs. disagree; count by sites, not links. **If the search returns nothing relevant after 2 queries**, note it and move to step 4. Advanced problems in the last year or two sometimes have thin coverage online. ### 4. Build your own solution independently Before looking at the internet's method, derive cold: a. **State the concept(s)** — if multi-concept, list each. b. **Write governing equations symbolically** — Advanced usually wants you to see the full structure before plugging numbers. c. **Choose the cleverest path** — look for conservation laws, symmetry, energy arguments, or non-obvious frames. A force-balance solution where an energy argument would work is a warning sign. d. **Solve symbolically**, keeping exact forms (√2, π, etc.) until the last step. e. **SymPy verification**: use `scripts/verify.py` as a starting point but expect to write bespoke code for Advanced problems. Keep `Rational` throughout; call `N(expr, 6)` only at the end. f. **For multi-correct**: evaluate each of the four options as a separate claim. Mark each as True or False with a one-line reason. Don't stop at the first correct option. ### 5. Cross-verify and iterate Lay your answer beside the internet's: - **Single-correct**: same option letter = done. Different = investigate. - **Multi-correct**: same *set* of correct options. A difference of even one option means disagreement — investigate. - **Integer / numerical**: same value (allowing for rounding tolerance the question specifies). When disagreeing: - Check for the Advanced-specific traps (see below). - Re-derive under the assumption each version is right — which assumption makes your version match? Which makes the internet's? That usually reveals the missing case. - **Iteration cap: 3**. If still disagreeing after 3 attempts, flag it explicitly: "⚠️ My SymPy-verified answer is {X}. Most online sources say {Y}. Disagreement remains after 3 iterations. My best guess at the cause: {reason}. Please adjudicate before sending." - **Never silently override a SymPy-verified answer to match a popular coaching answer** — Advanced keys have been wrong in the past, and a teacher flagging the mismatch to students can be more valuable than a "correct" answer delivered with false confidence. ### 6. Compose the WhatsApp-ready reply Advanced problems often need more detail than Main. Use this format, but feel free to extend the Steps section: ``` *[Topic] — JEE Advanced* *Concept:* [principle; if multi-concept, list both] *Key formula:* [governing equation(s)] *Given:* [quantities, units, sign conventions] *Derivation:* 1. [symbolic setup] 2. [key manipulation — conservation, substitution] 3. [simplify to closed form] 4. [substitute numbers] *Answer:* [value with units, option letter(s) if MCQ] ``` For **multi-correct** questions, list each option's verdict: ``` *Options:* (A) ✓ — [one-line reason] (B) ✗ — [one-line reason] (C) ✓ — [one-line reason] (D) ✗ — [one-line reason] *Correct: A and C* ``` For **integer-type**, give the exact integer and note the range if the question specifies tolerance. Formatting: - WhatsApp `*bold*` for headings. - No LaTeX. Unicode for Greek, operators, and superscripts where readable. - Under ~500 words for the full derivation reply. ### 7. Stage for teacher approval Default: **stage, don't auto-send.** 1. Show the draft clearly marked, with the disagreement flag at top if iteration didn't converge. 2. Target batch: "JEE Advanced" or "IIT batch" — resolve via `.auto-memory/project_whatsapp_mapping.md`. 3. Say: "Draft ready for [batch]. Say 'send it', 'edit: ...', or 'just for me'." 4. Call WhatsApp `list_chats` + `send_message` only on explicit confirm. ## JEE Advanced–specific watchouts These trip students and LLMs alike — always check: - **Multi-correct "partial match"**: evaluating only the first correct option costs marks. Work through all four, always. - **Limiting cases**: Advanced often asks "in the limit t → ∞" or "as M → ∞". Substitute first, then simplify. Taking the limit after too many substitutions can drop terms incorrectly. - **Symbolic vs numeric answer**: if the problem gives symbols (m, g, L) with no numeric values, the answer is symbolic. Don't invent numbers. - **Moment of inertia — axis through which point**: Advanced loves shifted-axis problems. Always check if the axis is through CM or at an offset. - **Non-inertial frames**: if the problem's frame is accelerating, add pseudo-forces. Advanced will sometimes give you two frames and ask for comparisons. - **Thermodynamic processes**: "slowly" = quasi-static. "Adiabatic" = no heat. "Free expansion" = irreversible, isothermal ideal gas. Each has different work/heat behavior. - **Interference and diffraction intensities**: I ∝ cos²(Δφ/2) for two-source. Don't confuse with I ∝ (sinα/α)² for diffraction. - **Circuit steady state vs transient**: in steady state, inductors = short, capacitors = open. Many Advanced problems switch from transient to steady in the same question. - **Relativistic electrons**: almost always non-relativistic in JEE, but check if kinetic energies exceed ~10 keV. - **Matrix match**: each row can pair with multiple columns. Don't assume 1-to-1. ## Topic references - `references/mechanics.md` - `references/electromagnetism.md` - `references/modern_physics.md` - `references/common_pitfalls.md` ## Using the verification script `scripts/verify.py` helpers cover the common patterns. For Advanced, expect to extend them — write bespoke SymPy code for the specific geometry or coupling. Keep `Rational` and `sqrt` symbolic until the final answer.