AP EAMCET Engineering 2013 Solved Paper

Two bodies A and B of equal surface area have thermal emissivities of 0.01 and 0.81 respectively. The two bodies are radiating energy at the same rate. Maximum energy is radiated from the two bodies A and B at wavelengths λA and λB respectively. Difference in these two wavelengths is 1µm. If the temperature of the body A is 5802K, then value of λB is