Physics - Thermal Properties of Matter
Practise 27 KCET previous year questions on Thermal Properties of Matter, compiled from papers spanning 2007 to 2025. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty KCET tests.
Thermal Properties of Matter has been asked in 16 of the 20 years of KCET papers analysed (2007–2026), with 27 questions in all. 33% of them were easy, 44% moderate and 22% tough. Most of its questions came from 2009, with 4 questions that year. In the last three years (2024–2026) it had 2 questions across 3 papers, about 0.7 per paper.
The chapter's 6 topics are not weighted equally: Radiation (11 questions, 41%), Conduction (8 questions, 30%), and Calorimetry (3 questions, 11%) have been asked the most. Over the last five years the most frequent topics have been Conduction (1), Calorimetry (1), and Thermometry (1). Conduction has produced the most tough questions (4).
- 1Three metal rods of the same material and identical in all respects are joined as shown in the figure. The temperatures at the ends of these2025Conduction
- 2A solid cube of mass at a temperature is heated at a constant rate. It becomes liquid at temperature and vapour at temperature . Let and be 2024Thermometry
- 3of ice at is mixed with of water at . The final temperature of the mixture is [Take, and2023Calorimetry
- 4Which of the following curves represent the variation of coefficient of volume expansion of an ideal gas at constant pressure?2021Thermal Expansion
- 5A sphere, a cube and a thin circular plate all of same material and same mass initially heated to same high temperature are allowed to cool 2020Convection
- 6A cup of tea cools from \( 65.5^{ } {C} \) to \( 62.5^{ } {C} \) in one minute in a room at \( 22.5^{ } {C} \). How long will it take to coo2018Radiation
- 7A pan filled with hot food cools from \( 94^{ } {C} \) to \( 86^{ } {C} \) in \( 2 \) minutes. When the room temperature'is \( 20^{ } {C} \)2016Radiation
- 8Four rods with different radii \( r \) and length \( l \) are used to connect two heat reservoirs at different temperature. Which one will c2016Conduction
- 9Two spheres carrying charges \( +6 {C} \) and \( +9 {C} \). separated by a distance \( {d} \), experiences a force of repulsion \( F \). Whe2015Calorimetry
- 10Pick out the statement which is incorrect.2015Thermal Expansion
- 11A train is approaching towards a platform with a speed of \( 10 {~ms}^{-1} \) while blowing a whistle of frequency \( 340 {~Hz} \). What is 2014Thermal Expansion
- 12A solid cylinder of radius made of a material of thermal conductivity is surrounded by a cylindrical shell of inner radius and outer radius 2013Conduction
- 13Two stars and radiate maximum energy at the wavelength of and respectively. Then the ratio of the surface temperatures of and is2013Radiation
- 14A hot body is allowed to cool. The surrounding temperature is constant at . The takes time to cool from to and time to cool from to . Then2012Radiation
- 15A, B and C are the three identical conductors but made from different materials. They are kept in contact as shown. Their thermal conductivi2012Conduction
- 16Three identical rods and are placed end to end. A temperature difference is maintained between the free ends of and . The thermal conductivi2011Conduction
- 17Which one of the following is graph for perfectly black body? is the frequency of radiation with maximum intensity. is the absolute temperat2011Radiation
- 18Two slabs are of the thicknesses and . Their thermal conductivities are and respectively. They are in series. The free ends of the combinati2010Conduction
- 19Hot water cools from to in the first and to in the next . Then the temperature of the surroundings is2010Radiation
- 20of water at is mixed with of water at . The final temperature of the mixture is2009Calorimetry
- 21Which of the following statement does not hold good for thermal radiation?2009Radiation
- 22The amount of heat energy radiated by a metal at temperature is . When the temperature is increased to 3T, energy radiated is2009Radiation
- 23The surface temperature of the stars is determined using2009Radiation
- 24The coefficient of thermal conductivity of copper is 9 times that of steel. In the composite cylindrical bar shown in the figure, what will 2008Conduction
- 25If a black body emits of energy per second when it is at , then the amount of energy emitted by it when it is at will be2008Radiation
- 26Two identical rods and made of two different metals having thermal conductivities in the ratio are kept in contact with each other at the en2007Conduction
- 27The surface temperature of the sun which has maximum energy emission at is . The temperature of a star which has maximum energy emission at 2007Radiation
Frequently Asked Questions
1.How many questions are available for Thermal Properties of Matter?
This chapter includes 27 questions compiled from KCET papers spanning 2007 to 2025.
2.Are these questions only from KCET, or from other exams too?
These are KCET questions specifically for the Thermal Properties of Matter chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Thermal Properties of Matter an important chapter for KCET Physics?
Thermal Properties of Matter has appeared in 16 of the 20 years of KCET papers covered here, with 27 questions across 16 papers - about 2 per paper it appears in.
4.What is the difficulty level of Thermal Properties of Matter questions in KCET?
Of the 27 questions analysed for this chapter, 33% are easy, 44% moderate and 22% tough. 2009 had the most, with 4 questions.
5.Which topics in Thermal Properties of Matter should I focus on?
These topics have carried the most weightage in Thermal Properties of Matter:
- Radiation - 11 questions (41%)
- Conduction - 8 questions (30%)
- Calorimetry - 3 questions (11%)
- Conduction has produced the most tough questions (4).
6.Is Thermal Properties of Matter's weightage in KCET going up or down?
Across all 16 papers analysed, Thermal Properties of Matter has averaged about 1.7 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.7 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.