g Estimate the number of photons emitted by the Sun in a second. The power output from the Sun is 4 × 1026 W and assume that the average wavelength of each photon is 550 nm.

The value is    

Explanation:

From the question we are told that

   The  power output from the sun is  

   The average wavelength of each photon is  

Generally the energy of each photon emitted is mathematically represented as

Here  h is the Plank's constant with value  

          c is the speed of light with value  

So

=>            

Generally the  number of photons emitted by the Sun in a second is mathematically represented as

=>      

=>          

i believe the answer is a hope it and is correct