Question

calculate the number of photons having a wavelength of 10.0 micrometers required to produce 1.0 kilojoules of energy

Answer 1

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Answer 2

To solve this problem, you can first calculate the energy of each photon by the formula \(\large E_{photon}=\frac{hc}{\lambda}\) then find the number of photon by \(\large N=\frac {E}{E_{photon}}\).

\(h\) is the Planck's constant, \(6.626\times 10^{-34}\) J.s
\(c\) is the speed of light, \(3\times 10^8\) m/s
\(\lambda\) is the wavelength, in meter