Advertisements
Advertisements
प्रश्न
Which one of the following statements about thermal conductivity is correct? Give reason.
पर्याय
Steel > Wood > Water
Steel > Water > Wood
Water > Steel > Wood
Water > Wood > Steel
Advertisements
उत्तर
Steel > Water > Wood
Reason:
Thermal conductivity is defined as the heat flow per unit time.
Steel has a higher thermal conductivity than water and wood.
[Thermal conductivity of steel = 50.2 w/mk
Thermal conductivity of water = 0.6 w/mk Thermal conductivity of wood = 0.12 w/mk]
APPEARS IN
संबंधित प्रश्न
What is the principle of the method of mixtures?
Name three factors on which heat energy absorbed by a body depends and state how does it depend on them.
Define thermal capacity.
Metals like copper and aluminum are good conductors of heat and electricity.
Water is used as a coolant because it ______.
What is the other name for heat capacity?
Compare heat capacity and specific heat capacity.
- 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?
What is the heat capacity (thermal capacity) of a body?
Why does a swimming pool take much longer to heat up than a kettle of water?
