Thermal conductivity of water in general with rise in temperature
Thermal conductivity of air with rise in temperature
Heat is mainly transferred by conduction, convection and radiation in
Because for radiation to be comparable the magnitude of temperature difference should be large enough, Convection & conduction is also predominant in boiler furnace.
Heat conduction in gases is due to
Heat transfer by molecular collision in
Arrangement of silver, air, aluminium and lead in order of increasing thermal conductivity at room temperature yields
According to their thermal conductivity for Air, k = 0.022 W/mK
for Aluminium, k = 205 W/mK
for Silver, k = 407 W/mK
Hence correct sequence is
Air, Lead, Aluminium, Silve
Metals are good conductors of heat because of
Choose the correct statement about thermaf conductivity
Due to increase in lattice vibratioh the thermal conductivity of metals decreases with increase in temperature.
Cork is used as a good insulator
In which one of the following materials, is the heat energy propagation minimum due to conduction heat transfer
Since thermal conductivity of air is minimum among the given material hence heat transfer will be minimum in air.