What is the wavelength of light (in nm) if 1.21x1021 photons have a total energy of 465 J?
Answer :-
First from the given data, energy of a photon is calculated then the wavelength of the light is calculated using the Plank equation.
The answer is given in the image,

What is the wavelength of light (in nm) if 1.21x1021 photons have a total energy of...
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