Question

Calculate the number of photons in 1000L of radiation in a thermal equilibrium at 500 K.

Answer 1

Answer:

given = photon = 1000L

            convert the given radiation of photons in the joule.

            1000L = 747X10³

            temprature  = 500K 5X 10⁻¹⁹

            energy of one photon = 2.96

to find =  number of photons  

solution =    

                  total energy = 7.47 X 10³/ 2.965 X 10⁻¹⁹

                                        = 2.52 X10¹⁵

                the number of photons in 1000L of radiation in a thermal equilibrium at 500 K is  2.52 X10¹⁵photons.