Heat Transfer (Conduction, Convection, Radiation): JEE Questions & Solutions
13 previous-year JEE Physics questions on Heat Transfer (Conduction, Convection, Radiation), each with a worked step-by-step solution.
Previous-year questions
- 01
Rods x and y of equal dimensions but of different materials are joined as shown in figure. Temperatures of end points A and F are…
MCQMediumJEE 2026 - 02
Two spherical bodies of same materials having radii 0.2 m and 0.8 m are placed in same atmosphere. The temperature of the smaller body is…
MCQEasyJEE 2025 - 03
Three conductors of same length having thermal conductivity k₁, k₂, and k₃ are connected as shown in figure. Area of cross sections of 1st…
NVAMediumJEE 2025 - 04
The temperature of a body in air falls from 40^° C to 24^° C in 4 minutes. The temperature of the air is 16^° C. The temperature of the…
MCQMediumJEE 2025 - 05
The difference of temperature in a material can convert heat energy into electrical energy. To harvest the heat energy, the material should…
MCQEasyJEE 2025 - 06
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…
MCQMediumJEE 2025 - 07
A wire of length 10 cm and diameter 0.5 mm is used in a bulb. The temperature of the wire is 1727^° C and power radiated by the wire is…
NVAEasyJEE 2025 - 08
Two cylindrical rods A and B made of different materials, are joined in a straight line. The ratio of lengths, radii and thermal…
NVAMediumJEE 2025 - 09
A bowl filled with very hot soup cools from 98^° C to 86^° C in 2 minutes when the room temperature is 22^° C. How long will it take to…
MCQMediumJEE 2023 - 10
A body cools from 60^° C to 40^° C in 6 minutes. If the temperature of the surroundings is 10^° C, then after the next 6 minutes, its…
NVAMediumJEE 2023 - 11
A body cools in 7 minutes from 60^° C to 40^° C. The temperature of the surroundings is 10^° C. The temperature of the body after the next…
MCQMediumJEE 2023 - 12
A body cools from 80^°C to 60^°C in 5 minutes. The temperature of the surrounding is 20^°C. The time it takes to cool from 60^°C to 40^°C…
MCQMediumJEE 2023 - 13
Two plates A and B have thermal conductivities 84 W m⁻¹K⁻¹ and 126 W m⁻¹K⁻¹ respectively. They have the same surface area and the same…
NVAEasyJEE 2023
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