Question

An indirectly heated filament is radiating maximum energy of wavelength 2.16x 10^-7m. Find the net amount of heat energy lost per second per unit area, the temperature of surrounding air is 13⁰C. Given b = 2.88x10^-3 mk, σ = 5.77x10^-8 J|s|m²|k⁴?  

Answer 1

By Wien’s Law:-

The product of wavelength (λm) at which maximum energy is emitted and the absolute temperature (T) of the black body is always constant.