Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferEasy2 min

PhysicsEasynumerical

Find the thermal radiation emitted in one second from one square centimetre of a black body at 2000 K, in joule (two decimals).

Answer:

90.72

Solution:

$P = σ T^{4} = 5.67 \times 1 0^{- 8} \times 200 0^{4} = 9.07 \times 1 0^{5}$ W $m^{- 2}$ . Per $c m^{2}$ the energy per second is 90.72 J.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

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