According to Stefan-Boltzmann law, the energy radiated per unit area per second by a body is proportional to:
T⁴
The Stefan-Boltzmann law states that the total energy radiated per unit area per second (the emissive power) by a black body is directly proportional to the fourth power of its absolute temperature:
\(E = \sigma T^{4}\)
where \(\sigma\) is the Stefan-Boltzmann constant. So the energy radiated is proportional to \(T^{4}\), not to \(T\), \(T^{2}\), or \(T^{3}\).
Important Questions from Heat and Transfer
In summer season, the top and outer surface of the house are painted white because:
What is the heat released by a heating filament rated 24 W when it is kept on for 6 seconds?
On a hot summer afternoon, the tent made up of fabric will be preferred as white colour is:
The coil of wire used in electric heaters is called a/an________.
Transfer of heat by convection can take place in
