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NCERT Textbook: Thermal Properties of Matter | Physics Class 11 - NEET PDF Download

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FAQs on NCERT Textbook: Thermal Properties of Matter - Physics Class 11 - NEET

1. What are the different types of thermal properties of matter?
Ans. The different types of thermal properties of matter include specific heat capacity, thermal expansion, thermal conductivity, and latent heat.
2. How does specific heat capacity affect the transfer of heat in a substance?
Ans. Specific heat capacity is the amount of heat energy required to raise the temperature of a unit mass of a substance by one degree Celsius. It determines how quickly or slowly a substance can heat up or cool down. Substances with higher specific heat capacity require more heat energy to raise their temperature, while substances with lower specific heat capacity heat up or cool down more quickly.
3. What is thermal expansion and why is it important?
Ans. Thermal expansion is the tendency of matter to change in shape, volume, or length in response to a change in temperature. When a substance is heated, its particles gain kinetic energy and move more vigorously, causing the substance to expand. This property is important in various applications such as construction, engineering, and everyday objects where materials need to withstand temperature changes without breaking or deforming.
4. How does thermal conductivity affect the transfer of heat in different materials?
Ans. Thermal conductivity is the property of a material to conduct heat. It determines how well a material can transfer heat through it. Materials with high thermal conductivity, such as metals, are good conductors of heat and allow heat to flow easily. On the other hand, materials with low thermal conductivity, such as insulators, restrict the transfer of heat. This property is important for designing efficient heat exchangers, insulating materials, and other thermal management systems.
5. What is latent heat and how does it relate to phase changes of matter?
Ans. Latent heat is the heat energy absorbed or released during a phase change of matter without a change in temperature. It is associated with the conversion of a substance between its solid, liquid, and gaseous states. During phase changes, the energy supplied or released is used to break or form intermolecular forces. For example, when a solid is heated and melts into a liquid, the absorbed heat energy is used to overcome the forces holding the particles together, resulting in the phase change.
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