Advertisements
Advertisements
प्रश्न
Define heat capacity and state its SI unit.
Advertisements
उत्तर
Heat capacity of a body is the amount of heat energy required to raise its temperature by 1°C. Its SI unit is JK-1
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.
Name two green house gases ?
How will climate changes affect the various animal species?
Specific heat capacity of a substance A is 3.8 J g-1 K-1 and of substance B is 0.4 J g-1 k-1. Which substance is a good conductor of heat? How did you arrive at your conclusion?
Is it possible to condense the water formed, back to ice by adding ice at 0°C. Explain with reason.
State factors on which the amount of heat radiated by a body depends.
Write a short note.
Specific heat capacity
50 g of copper is heated to increase its temperature by 10° C. If the same quantity of heat is given to 5 g water, the rise in its temperature is [Specific heat of copper = 420 joule-kg-1 °C-1 , specific heat of water = 4200 joule-kg-I °C-1]
Conductors have generally high specific heat capacities and insulators have low specific heat capacities.
Observe the following diagram and answer the questions given below:
Specific heat capacity of metals
- Which element has maximum specific heat capacity? Justify.
- Which element has minimum specific heat capacity? Justify.
- Define specific heat of object.
