Heat Transfer has 28 questions in JEE Main papers from 2020 to 2026, about 4 per year across all shifts. The free PDF has 27 of them, each with its answer. The most asked topic is Conduction (14 questions), followed by Newton's Law of Cooling (11) and Radiation and Stefan-Boltzmann Law (3).
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Source: official NTA JEE Main papers · Updated
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2 of this chapter's questions came back in a later paper (2021–2026). See the most repeated.
Heat Transfer had about 0.1 questions per shift in recent JEE Main papers (2024–26). Most asked topic: Conduction. About one question in the 2026 papers. (Some topics were cut in 2024; see what changed.)
It came up in about 6 of the 2024–26 shifts in our bank. Question types in 2020–2026: about 18 MCQs and about 10 numerical.
| Year | Questions | Per shift | MCQ | Numerical |
|---|---|---|---|---|
| 2026 | 1 | <0.1 | 1 | 0 |
| 2025 | 7 | 0.4 | 4 | 3 |
| 2024 | 0 | 0 | 0 | 0 |
| 2023 | 5 | 0.2 | 3 | 2 |
| 2022 | 7 | 0.3 | 4 | 3 |
| 2021 | 6 | 0.2 | 4 | 2 |
| 2020 | 2 | 0.1 | 2 | 0 |
| 2020–2026 | 28 | 0.2 | 18 | 10 |
| Topic | Questions |
|---|---|
| Conduction | 14 |
| Newton's Law of Cooling | 11 |
| Radiation and Stefan-Boltzmann Law | 3 |
Counted from PrepWiser's question bank of JEE Main papers, 2020–2026. Per shift = questions that year ÷ shifts in our bank. Updated .
Two free sheets, made from the past JEE Main questions on this chapter.
The link opens this page: the free PDF with 27 questions and answers, and online practice. Nobody needs to log in.
| Year | Asked | In PDF | |
|---|---|---|---|
| 2026 | 1 | 1 | |
| 2025 | 7 | 7 | |
| 2024 | 0 | 0 | |
| 2023 | 5 | 5 | |
| 2022 | 7 | 6 | |
| 2021 | 6 | 6 | |
| 2020 | 2 | 2 |
in the free PDF asked, not in the PDFThe PDF only has questions we can print in full with a checked answer, so it holds 27 of the 28 asked.
How many Heat Transfer questions each topic had in every JEE Main year (all shifts), counting every question asked, including ones not in the PDF. Darker cells mean more questions.
| Topic | Asked | Share | 2026 | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 |
|---|---|---|---|---|---|---|---|---|---|
| Conduction | 14 | 50% | 1 | 3 | · | 1 | 4 | 4 | 1 |
| Newton's Law of Cooling | 11 | 39% | · | 2 | · | 4 | 2 | 2 | 1 |
| Radiation and Stefan-Boltzmann Law | 3 | 11% | · | 2 | · | · | 1 | · | · |
| All topics | 28 | 100% | 1 | 7 | 0 | 5 | 7 | 6 | 2 |
Swipe the table sideways for older years.
The only JEE Main 2026 Heat Transfer question in the free PDF.
JEE Main 2026 · 22 Jan · Shift 1 · Conduction
Rods and of equal dimensions but of different materials are joined as shown in figure. Temperatures of end points and are maintained at and respectively. Given the thermal conductivity of is three times of that of , the temperature at junction points and are (close to):
JEE Main 2025 · 7 Apr · Shift 2 · Conduction
Answer: 360
JEE Main 2025 · 7 Apr · Shift 1 · Radiation and Stefan-Boltzmann Law
A wire of length 10 cm and diameter 0.5 mm is used in a bulb. The temperature of the wire is and power radiated by the wire is 94.2 W . Its emissivity is where _________.
(Given and assume that the emissivity of wire material is same at all wavelength.)
Answer: 5
JEE Main 2025 · 29 Jan · Shift 2 · Newton's Law of Cooling
A cup of coffee cools from 90°C to 80°C in t minutes when the room temperature is 20°C. The time taken by the similar cup of coffee to cool from 80°C to 60°C at the same room temperature is:
Answer: (A)
The free PDF above has all 27 questions grouped by topic, with an answer key.
Answer Heat Transfer PYQs in the browser, get each one checked instantly and open the step-by-step solution where there is one.
Practise Heat Transfer online28 questions from 2020 to 2026, about 4 per year. In 2026 it had 1. The free PDF has 27 of them.
By past papers: Conduction (50%), Newton's Law of Cooling (39%) and Radiation and Stefan-Boltzmann Law (11%) of all Heat Transfer questions.
Yes. The PDF and its answer key are free, and you can practise the questions online with no login, with step-by-step solutions where available.
Prefer to solve online? Practise Heat Transfer online with step-by-step solutions where available, or work through JEE Main papers shift by shift.
JEE Main PYQs by year: 2026 · 2025 · 2024 · 2023 · 2022 · 2021 · 2020
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