Heat Transfer - NEET Previous Year Questions with Solutions

Heat Transfer is considered easy to moderate in NEET Physics. The chapter has a limited number of formulas — Stefan-Boltzmann, Wien's Displacement, Newton's Law of Cooling, and the thermal conductivity equation. Students who practise PYQs thoroughly can solve these questions in under 90 seconds during the exam.

Newton's Law of Cooling and the Stefan-Boltzmann Law are the two most important topics for NEET. Newton's Law of Cooling appears almost every year and follows a fixed numerical pattern. Stefan-Boltzmann Law questions test T⁴ dependence and emissivity, which are formula-based and straightforward once practised with PYQs.

NEET typically includes 1–2 questions from Heat Transfer every year. Based on papers from 2010 to 2024, radiation (Stefan-Boltzmann Law and Newton's Law of Cooling) is tested most frequently. The chapter contributes approximately 4–8 marks, making it one of the more predictable and manageable topics in NEET Physics.

Heat Transfer NEET PYQ solutions are available on the eSaral website and app. The solutions include year-wise questions from 2005 onwards with step-by-step explanations. You can also download the eSaral app for offline access. Additionally, NCERT Solutions cover the theoretical foundation tested in all Heat Transfer PYQs.

Wien's Displacement Law states that the peak wavelength of radiation (λ_max) emitted by a black body is inversely proportional to its absolute temperature: λ_max × T = 2.898 × 10⁻³ m·K. NEET tests this by asking students to find peak wavelength at a given temperature, or to determine which of two bodies is hotter from their emission spectra.

Yes, NEET asks 1 question on thermal conductivity approximately every alternate year. These questions involve rods in series or parallel configurations, junction temperature calculation, or comparing conductivity of two materials. Knowing the thermal resistance analogy (R = L/kA) is sufficient to handle all NEET-level conduction questions.