Poll Results
No votes. Be the first one to vote.
Heat given to a body, which raises its temperature by 1° C is
Temperature is a measure of the average kinetic energy of particles in a substance. It determines the direction of heat flow between objects and is commonly measured in Celsius, Fahrenheit, or Kelvin. Temperature plays a crucial role in physical and chemical processes and is essential in everyday life and scientific research.
Class 11 Physics Chapter 10 Thermal Properties of Matter focuses on understanding heat transfer methods such as conduction, convection and radiation. It explores thermal expansion, specific heat capacity, calorimetry and latent heat. The chapter highlights their real-life applications and significance in analyzing thermal phenomena in both natural and scientific contexts.
Share
Specific heat is the amount of heat energy required to raise the temperature of a unit mass of a substance through 1° C (or 1 K). It is an important property of materials and varies from substance to substance.
Definition:
The specific heat c is mathematically defined as:
c = Q / (m ΔT)
Where:
– c = specific heat (J/kg°C or J/kg·K)
– Q = amount of heat added to the substance (in joules)
– m = mass of the substance (in kilograms)
– ΔT = change in temperature (in °C or K)
Explanation:
When heat Q is added to a substance, its temperature increases. The specific heat tells us how much heat is needed to achieve a specific temperature rise per unit mass of the substance.
For instance, if 500 joules of heat are added to 2 kg of water and the temperature increases by 10° C, then the specific heat can be calculated as follows:
1. Given:
Q = 500 J
m = 2 kg
ΔT = 10° C
2. Calculation of Specific Heat:
c = Q / (m ΔT) = 500 J / (2 kg × 10 °C) = 500 J / 20 kg°C = 25 J/kg°C
That is, 25 joules of heat raises the temperature of 1 kg of water by 1° C.
Conclusion:
Specific heat is an important concept in thermodynamics and material science because it helps determine how substances respond to heat transfer and temperature changes. It is crucial for applications such as heating, cooling, and thermal energy storage.
Click here:
https://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-10/