CSIR NET December 2025 Physical Science Exam Analysis OUT LIVE 🔍
The National Testing Agency (NTA) successfully conducted the CSIR NET December 2025 Physical Science exam on 18 December 2025 in the second shift. The paper was held in Computer-Based Test (CBT) mode at centres across India.
The exam was designed to assess eligibility for Junior Research Fellowship (JRF) and Lectureship/Assistant Professorship. Candidates can check the detailed analysis below including difficulty level, topic-wise questions, good attempts, and expected cutoff ranges.
⭐ CSIR NET Physical Science Exam 2025 – Overview
The Physical Science paper tested candidates on conceptual understanding, numerical accuracy, and analytical reasoning across Physics, electronics, mathematics, and thermodynamics topics.
As per initial feedback, the exam was Moderate to Difficult, with Part C being calculation-heavy and concept-oriented.
📌 CSIR NET December 2025 Physical Science – Exam Summary
| Particulars | Details |
|---|---|
| Exam Name | CSIR NET December 2025 |
| Conducting Body | National Testing Agency (NTA) |
| Shift | Shift 2 |
| Exam Date | December 18, 2025 |
| Timing | 3 PM – 6 PM |
| Mode | Online (CBT) |
| Duration | 3 Hours |
| Language | English & Hindi |
| Total Marks | 200 |
| Questions Attemptable | 50–60 |
| Overall Difficulty | Moderate to Difficult |
| Official Website | csirnet.nta.ac.in |
📊 Overall Difficulty Level – Section-wise
| Section | Difficulty Level |
|---|---|
| Part A | Difficult |
| Part B | Easy |
| Part C | Moderate |
| Overall | Moderate to Difficult |
🎯 Good Attempts (Approximate)
Candidates attempting the following range of questions are likely to be in a competitive bracket:
| Section | Good Attempts |
|---|---|
| Part A | 7–10 |
| Part B | 30–35 |
| Part C | 10–15 |
| Total | 50–60 |
📚 Topic-Wise Questions Asked in Exam
🧠 Major Topics Covered
🌀 Thermodynamics
- Postulates & probability
- Adiabatic process
- Pressure variation
- Kinetic theory {⟨v²⟩, ⟨vₓ²⟩}
💡 Electronics
- OP-AMP output
- K-map questions
- Sigma notation
- Error analysis
🔬 Nuclear Physics
- Particle stability
- Baryon decuplet
- Cross section
- Nuclear reaction steps
📐 Mathematical Physics
- Cauchy’s theorem
- Poisson brackets
- Hermite generator derivative
- Residue case
⚛ Quantum Mechanics
- SHM and harmonic oscillator
- Perturbation theory
- Angular momentum operators
- ⟨LₓLᵧ⟩
📡 Electromagnetic Theory
- Charge distribution
🌀 Classical Mechanics
- Hamiltonian
- dL/dt
- spherical coordinate applications
🧩 Part A – Analysis
Part A tested logical reasoning, numerical aptitude and data interpretation. While conceptual, several items required time-consuming calculation.
Topics included:
- Probability
- Series formation
- Quadratic expressions
- DI sets
- Puzzles
- Percentage
- LCM & HCF
- Profit-loss
🔍 Parts B & C – Analysis
- Application-based numerical questions dominated
- Quantum mechanics and classical mechanics had multi-step calculations
- Electronics and statistical physics questions were direct but time-consuming
A balanced approach between speed and accuracy was essential.
📉 CSIR NET Physical Science Expected Cutoff 2025 (Category-wise)
| Category | JRF (Expected) | Assistant Professor (Expected) | PhD Admission (Expected) |
|---|---|---|---|
| UR | 50–55 | 45–46 | 25–27 |
| EWS | 43–44 | 38–39 | 25–27 |
| OBC | 43–45 | 38–39 | 25–27 |
| SC | 30–33 | 28–29 | 30–33 |
| ST | 29–31 | 25–27 | 30–33 |
| PwD | 25–28 | 25–27 | 35–37 |
Cutoffs depend on:
✔ number of candidates
✔ difficulty of paper
✔ subject-wise competition
✔ normalization process
📢 What’s Next?
- Provisional answer key soon 📄
- Candidates can challenge answers online
- Final key + result after review
Stay tuned for updates on:
✔ memory-based questions
✔ expert analysis
✔ cut-off trend charts
🔎 CSIR NET December 2025 Physical Science Exam Analysis: Difficulty, Good Attempts, Cut Off
CSIR NET December 2025 Physical Science exam analysis out. Check section-wise difficulty, good attempts, topic distribution, expected cutoffs and exam overview. Answer key updates soon.
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