what is the energy of a beam on sunlight?

Question

please help

Answer 1

For calculating energy of a beam we need to know total number of photons in that beam and wave length or frequency of such photon

 

Then Energy  = (Total no. of photons x planks constant x velocity of light)/ Wave length of each photon og sunlight beam

 

                      =(N x 6.62 x 10 ^-34 x 3x1o⁸) / wave length( in m)  The answer will be in Joule or J

 

If frequency is given than we can use 

frequency = velocity of light / wave length