Advertisements
Advertisements
प्रश्न
What do you understand by the following statements:
The heat capacity of the body is 60JK-1.
Advertisements
उत्तर
Heat capacity is the amount of heat required to raise the temperature of a body by 1°C or 1 K. Thus, 60 JK−1 of energy is required to raise the temperature of the given body by 1 K.
APPEARS IN
संबंधित प्रश्न
A mass m1 of a substance of specific heat capacity c1 at temperature t1 is mixed with a mass m2 of other substance of specific heat capacity c2 at a lower temperature t2. Deduce the expression for the temperature t of the mixture. State the assumption made, if any.
Give one example where high specific heat capacity of water is used as cooling.
A piece of iron of mass 2.0 kg has a heat capacity of 966 J K-1. Find its specific heat capacity in S.I unit.
Name the substance which has maximum specific heat capacity.
Explain, Why is it advisabile to pour cold water over burns, caused on human body, by hot solids?
Some heat is provided to a body to raise its temperature by 25°C. What will be the corresponding rise in temperature of the body as shown on the Kelvin scale?
Write an expression for the heat energy liberated by a hot body.
Numerical Problem.
How much heat energy is required to change 2 kg of ice at 0°C into water at 20°C? (Specific latent heat of fusion of water = 3,34,000 J/kg, Specific heat capacity of water = 4200 JKg–1K–1).
Heat is applied to a rigid diatomic gas at constant pressure. The ratio ΔQ : ΔU : ΔW is ______.
A geyser heats water flowing at a rate of 2.0 kg per minute from 30°C to 70°C. If the geyser operates on a gas burner, the rate of combustion of fuel will be ______ g min-1.
[Heat of combustion = 8 × 103 Jg-1 Specific heat of water = 4.2 Jg-1°C-1]
