if the energy of a photon is 1.32 × 10–18 j, what is its wavelength in nm?


Given that energy of a photon is given by
E =hf
 Where h is the plank constant with the value of and f is the frequency.
Therefore we start by finding  the frequency
 
From here we can proceed to find the wavelength
TO Calculate the wavelength by finding   of  photon we can use this equation

We start by find the frequency , since we already know the value of the velocity of electromagnetic waves
C = 300 000 000m/s


  






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