Advertisements
Advertisements
प्रश्न
Explain the three modes of transfer of heat.
Advertisements
उत्तर
Three modes of heat transfer are
(a). Conduction involves the transfer of heat from the hot end to the cold end from particle to particle of the medium.
(b). Convection is the transfer of heat from one body to another by the actual movement of the particles of the medium
(c). Radiation is the transfer of heat from one body to another without the need of an intervening material medium
APPEARS IN
संबंधित प्रश्न
Draw a neat labelled diagram of a laboratory thermometer.
Name or state the following:
The law which states that pressure remaining constant the volume of a given mass of dry gas is directly proportional to its absolute [Kelvin] temperature.
Define temperature on a conventional basis.
Define temperature and write its SI unit.
Do all substances expand on heating? Give examples.
Give a scientific reason for the following:
Old quits are less warm than the new ones.
Where am I?
The mean annual temperature is 25°C around me.
Find the final temperature of a copper rod. Whose area of cross-section changes from 10 m2 to 11 m2 due to heating. The copper rod is initially kept at 90K. (Coefficient of superficial expansion is 0.0021 /K)
Temperature is related to how fast the atoms within a substance are moving.
