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Conduction and Thermal Resistance for NEET: 13 solved questions

Real NEET paper questions on conduction and thermal resistance, part of thermal properties of matter. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 1995 to 2025. No sign-in needed to read them.

What this topic asks

• Rate of conduction through a rod — 8 questions
• Series and parallel resistance — 3 questions
• Rate of melting through a wall — 1 question
• Thermal insulation — 1 question

All 13 questions with solutions

• Two rods A and B of different materials are welded together as shown in the figure. Their thermal conductivit… NEET 2017
• The two ends of a metal rod are maintained at temperatures 100 °C and 110 °C. The rate of heat flow in the ro… AIPMT 2015
• Two metal rods 1 and 2 of the same length have the same temperature difference between their ends. Their ther… Karnataka NEET 2013
• A slab of stone of area 0.36 m² and thickness 0.1 m is exposed on the lower surface to steam at 100 °C. A blo… CBSE AIPMT 2012 Mains
• A cylindrical metallic rod in thermal contact with two reservoirs of heat at its two ends conducts an amount… CBSE AIPMT 2010
• The two ends of a rod of length L and a uniform cross-sectional area A are kept at two temperatures T₁ and T₂… CBSE AIPMT 2009
• Which of the following rods (of given radius r and length l), each made of the same material and whose ends a… CBSE AIPMT 2005
• Consider a compound slab consisting of two different materials having equal thicknesses and thermal conductiv… CBSE AIPMT 2003
• Consider two rods of the same length and different specific heats (S₁,S₂), conductivities (K₁,K₂) and areas o… CBSE AIPMT 2002
• A cylindrical rod has temperatures T₁ and T₂ at its ends. The rate of flow of heat is Q₁ cal s⁻¹. If all the… CBSE AIPMT 2001
• Heat is flowing through two cylindrical rods of the same material. The diameters of the rods are in the ratio… CBSE AIPMT 1995
• Three identical heat conducting rods are connected in series as shown in the figure. The rods on the sides ha… NEET 2025
• Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Asserti… NEET 2024 Re