Question

Calculate the number of photons of light with a wavelength of 3000 pm that provide 2 J of energy.

Expert Answer

Step 1
It is required to calculate the total number of photons having a total energy of 2 J. Energy of one photon can be calculated as,
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Step 2
Here, ‘h’ is Planck’s constant and ‘ν’ is the frequency of radiation. Expressing ν in terms of speed of light (c)  and wavelength (λ),
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Step 3
Substituting the value of ‘ν’ in equation, we...
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