Advertisements
Advertisements
Question
Define thermal capacity.
Solution
- Heat capacity or thermal capacity is defined as the amount of heat energy required to raise the temperature of a body by 1°C. It is denoted by ‘C’.
- C = Q/t, where C’ is the heat capacity, ‘Q’ is the quantity of heat required and ‘f’ is rise in temperature.
- SI unit of heat capacity is J/K. It is also expressed in cal/°C, kcal/°C or J/°C.
APPEARS IN
RELATED QUESTIONS
The S.I. unit of heat capacity is ______.
Convection is the process by which the thermal energy flows in solids.
Heat capacity C’= ______.
Water is used as a coolant because it ______.
The amount of heat required to raise the temperature to 1°C is called ______.
Thermal capacities of substances A and B are same. If mass of A is more than mass of B then:
Which substance will show greater rise in temperature if the same amount of heat is supplied to both?
The graph given below shows heat energy supplied against change in temperature when no energy is lost to the surroundings. The slope of this graph will give:
Heat capacity of a body is the ______.
A solid of mass 60 g at 100°C is placed in 150 g of water at 20°C. The final steady temperature is 25°C. Calculate the heat capacity of solid.
[sp. heat capacity of water = 4.2 J g-1 K-1]
- Calculate the heat capacity of a copper vessel of mass 200 g if the specific heat capacity of copper is 410 J kg-1 K-1.
- How much heat energy will be required to increase the temperature of the vessel in part (a) from 25°C to 35°C?